Meta Ads Error 2643186 — The Solution That Actually Works When Ads Keep Showing ‘Not Running’

Soulpapamarketing’s branding & marketing insights.

One day, all your ads suddenly switch to ‘Not Delivering’

The symptom is simple. Ads that were running smoothly suddenly shift almost entirely to ‘Not Delivering’ status. The error code is 2643186. Even if you duplicate the ad to create a new campaign, it enters the same state. You wait five to seven days, but nothing changes.

Inquiries yield no answers. Escalated support has no explanation, and cases like this are so rare that no public solutions exist anywhere domestically or internationally. The investigation does get escalated, but your ads remain indefinitely frozen in the meantime.

One thing must be made clear upfront: there is no prevention method. You didn’t use creatives that should be rejected, you never took actions that would cause deactivation, your budget is stable, and your security is in order—yet it still happens. Scanning international cases reveals no common root cause. That’s why this piece is about recovery, not prevention.

Why the usual troubleshooting steps don’t work at all

Search “Meta ads not delivering” and you’ll find four standard solutions: check policy violations, verify payment method, request review from account quality, revise creatives and resubmit. With 2643186, all four are completely powerless.

Here’s why. No restriction appears on account quality, payment is normal, and individual ads show no rejection reason. There’s no review target visible on the screen to request. If you revise creatives and resubmit, the review restarts from the beginning, and ads entered that way loop back into infinite review.

Most critically, duplication doesn’t work. Duplicating a campaign, an ad set, or just creatives—the result is identical. This leads to the hypothesis: “something is locked somewhere, and that lock carries over to duplicates.” The problem is there’s no way to verify where that lock is from the screen.

How we identified the root cause—four combinations testing account and page

To locate the lock, we needed to isolate variables. Ads are built on two axes: ad account and Facebook Page. Varying each between existing and new creates four combinations.

We ran all four combinations on an actual brand account. Creatives were matched to identical specs, and campaign structure and budget conditions were kept the same.

The divide is clear. Any combination with the existing page remains locked even when swapping accounts. Only the two combinations with a new page pass review. The lock is on the page, not the ad account.

For reference, the explanations “the page is old” or “the new page has low trust” are disproven by this case. The page in question had been operating normally for over three years.

The page shows no warnings whatsoever

This is why the error is particularly troublesome. The page is under review, yet no warning alerts or guidance text appear anywhere on it. The page quality section looks clean. If you only look at Ads Manager, you have no way to discover that the page is the source.

In Meta’s algorithm, every ad carries an identifier based on the Facebook Page. So when a page is restricted, ads made from that page remain locked even if moved to another account. The lock spreading through creatives is an illusion stemming from the same mechanism.

Creating a new ad account is not the answer

Search results often warn: “making a new account is treated as circumvention and can result in business manager suspension.” What we confirmed in our test is slightly different.

Attaching an existing page to a new ad account replicates the symptom. You’re just wasting labor. Creating a new account with a new page doesn’t solve it either. Review passes, but a brand-new ad account undergoes a separate waiting period before first spend. No errors appear on screen, account status, payment, pixel, and audience are all normal—but it won’t enter the auction. The combination that saw zero impressions after 5.6 hours in our test falls into this category.

The recovery procedure that actually worked

The steps are as follows.

First, create a new Facebook Page. Clean up the Instagram account connection and landing domain at the same time. Keep your existing ad account as-is.

Second, do not duplicate anything. Not campaigns, not ad sets, not creatives. Do not duplicate. Rebuild campaigns from the ground up. Duplicated objects inherit their previous state entirely.

Third, re-register all creatives from scratch. This is the heaviest lift in practice. If you have 300–400 creatives in operation, the workload is substantial. For accounts with fewer creatives, you can finish in a day.

Following this process, we broke out of the locked state. Once we rebuilt campaigns on the new page, ads delivered immediately upon launch.

Pitfalls when recreating creatives at scale

For accounts with hundreds of creatives, re-registration becomes its own project. Here are the actual pitfalls we encountered.

Creatives cannot be edited after creation. Meta’s ad creatives are immutable objects. If you make a mistake, you don’t edit—you create a new one and swap it in. When you try to replace via API, you get a success response but no actual change. Always verify the swap with real data.

Image crops by placement silently disappear. The same image can be registered with different crop data for Feed vs. Story placements. If you organize by image file alone, crops are lost. Then that placement becomes undeliverable.

Ad names contain invisible control characters. Matching by name causes the same ad to be counted as both missing and duplicated. Strip all whitespace and control characters before comparing names.

Ad sets with minimum spend limits won’t turn on in new campaigns. Combinations allowed in the original campaign are rejected in new ones regardless of amount. You must disable that setting to turn it on.

You may also see a yellow warning in Ads Manager after re-registration. In our case, this warning was a false signal. We verified actual delivery in Stories and Reels and classified it as normal delivery. Judge by actual impression data, not warning text.

If you can’t prevent it, prepare for it

You cannot block this error before it arrives. But you can reduce recovery time by preparing.

First, keep your page swappable at all times. If landing domain and Instagram account connection are bound to a single page, you must untie them before swapping.

Second, store creative assets outside Ads Manager. Keep source images, videos, copy, creative set layouts, and landing URLs in a separate inventory outside your account. If you rely only on Ads Manager screens to resurrect ads, you’ll spend several times longer. The work becomes duplication instead of rebuilding.

Third, on the day ads stop, do not create a new ad account first. As we saw, a new account adds its own waiting period. The verified path is to keep the account and swap the page.

Frequently Asked Questions

Insights from Soulpapa Marketing — Korea’s digital marketing agency.
Original Korean article: https://soulpapa.co.kr/2026/09/03/meta-ads-error-2643186/