i'm browsing some offers for mobile and i notice a good bunch of them do not allow custom creatives. is it recommended to take up such offers given that theres little room for creativity? are they even possibly unprofitable offers?
Of course it can work - just look at the recent thread by the Rat's about Spotify.
However, generally I would avoid such offers unless there was some clear potential there - e.g. mass broad appeal, branded, etc. For a gaming offer as an example you'd be hard pressed to get any traction with stock banners that every kid and his mum have seen.