Last week, a friend created a Facebook Page likes Ad and set it to run for 4 days instead of allowing it to run continuously.
After the campaign completed, she discovered that the result was impressive and decided to continue running the ad.
Unfortunately, she couldn’t find a way to resume the ad. Whenever she tries doing so via the Facebook Page Ad Center, she gets an error message which prompts her to duplicate it or create a new ad.
She contacted me if I could help.
Within few minutes, I was able to fix it for her.
Go to Facebook Ads Manager, edit the ad set by changing the end date (in budget & schedule section) to a future date or set the ad to run continuously.
I hope this helps.