I can´t switch to CPA (conversion volume is + than fine).
I decided to switch one campaign that was in CPC to CPA, with 120 conversions in the past 30 days. My surprise is that everytime I try to switch it, under configuration, it tells me that first I have to remove the bid strategies currently applied to my ad groups, kws... . The point is, this has already been removed... so I don´t know what this is all about.
I would really appreciate if you could give me some hint.
Thanks a lot in advance!