Hi mate
I have a somewhat weird problem!
I had paused a campaign that was running for few days with a stable CPM on 3/5/2019.
I resumed the campaign today 9/5/2019 (after 6 days only) but for some unknown reason, the CPM increased by almost 75% and it's not returning back
The audience is the same and the CTR is the same as well but the CPM jumped and this led to a decrease in Relevance Score by 1 mark.
As a remark, during the pause period I ran other ad sets that had lower CPM and I have the campaign budget optimization option "On". However, I switched the other ad sets off before resuming the troubled one.
Did you face a problem like this before?
Do you think if I create a new ad set, it would solve the problem?
Do you think it's related to the campaign budget optimization option (even when I switched the others off) because other ad sets let to more clicks at a lower price?
Should I try adding a cost control?
Should I just give it more time to reoptimize?
Thanks in advance
Regards