I know the guys from Olimob personally for a long time, but I haven't worked with them before. Now i started to google yuak mix geo and i decided to test their offers on smartlink, first day result was not so good, but manager told me to leave it for some more time and traffic is getting better and better. here is a screenshot from 3 days, conversion and epc growing.

My only negative or positive is the platform, I do not know yet, I can not get used to it, although the guys tell me and help me to use it. I have not yet reached an agreement on payments, but I know that they pay without any problems.