Doing some lead gen and the last 30 days seeing a big increase in cost (comparing to the 30 days prior, which in turn was higher than the 30 days before that(but not shown)), with the campaigns/adsets basically running the same, albeit with a slight budget increase. First month had ROI 5, then it was ROI 2, now it's barely 1. 2. All of them are CBO. So isn't CBO supposed to _lower_ CPA as it gets smarter? A lot of the audience targeting is LLA 50% Video views, but that should still be a huge audience. Highest budget on any adset was $500/day, at one point was spending close to $3k/day, now down to $1k/day after basically it's been a 'turn off adset' fest the past couple weeks. I've tried duplicating the adsets with narrrowing the channels (i. e. mobile only) or age or gender restrictions, but the end result is still raising CPAs. Frustrating, not sure what to do.
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