1 banner, 1 offer and sign up ratio from 6 percent goes to 2 percent.
Basically when i started this camp ROI was like 100%, i was like wow, then conversions dropped as you see on the graph, it is still profitable but i think about pausing it before i got in the negative territory.
What would you do?
is it an adult offer? cuz that's pretty common on both adult and regular dating, especially if quality isn't backing out. I'd run it until it consistently is not profitable over a statistically significant amount of clicks and if it is a high volume campaign with a lot of potential, i'd reach out to the advertiser and see if you can figure out what the deal is
Are you targeting a small demographic? Its either that or just run of the mill inconsistency
Is this just one day worth of data or is it averaged across many? How many clicks/conversions? I wouldn't worry much about that kind of run-of-the-mill variation as Stackman mentioned, if it is from only one or a few days. It may change day to day and you'd need more data (e.g. from many weekdays + weekends) to make any decisions on day-parting.
@rafael3000 - I think what Stackman means is that what you're seeing might just be the kind of inconsistency that is very common in most campaigns.
I'd agree - give it some more time and some more data and you'll get a better idea of the real picture.
but is there a point to continue running it of at the end of the day you just break even?
The point is that you don't know what will happen. That slope downward might reverse very quickly, and this campaign might end up making 100% ROI again. Unless I'm misreading that graph (how many conversions have you had total?) you need more data to know for sure.
Campaigns really change how they perform day to day. I wouldn't stress much at all about one or even two days' results. I've had campaigns that lost me money on Fridays that made it all back and a whole lot more on Sunday 
I would say it's 90% the offer scrubbing , pretty hard for the offer CR to drop off like that.
I suppose LP CTR hasn't changed much right?
no, lp ctr is stable
There's certain merchants out there that scrub pretty hard and operate like email submits used to. They let you run and then adjust when they fire the pixel on the backend. All around shady but it happens. I'd swap to a similar but different offer.