The problems is not the offers themselves it is the companies that run it. They have no real way of tracking it and they basically want to collect the AD revenue for themselves without paying AE or the player for the time they spent doing the offer.
The post below is more about Problem sponsors then offers but my post was deleted and directed here.
I downloaded Free Download Manager through TokenAds and after showing them proof after proof I completed the offer they refuse to award me 276 Artix points and now they are trying to say I complete it through another offer wall which I only complete each offer only once per sponsor. When I asked which Offer Wall it was that they claimed I completed it through they refused to answer. With refusing to give points they are basically stealing AD revenue from AE and something needs to be done about it.
I agree with you completely. I've run into the same problems with RadiumOne's support, both for in-game points here and at Aeria Games. A couple were honored within a week, but, the average amount of time it took to get anything substantial out of them was around 2 months, some even took 3 months, and it seemed it was more because I wouldn't let them close the ticket, rather than any sort of actual "proof".
In fact, if there is any way to suggest this to our wonderful friends at Artix, I'd suggest they steer clear of these people that provide such lousy support. I even tried contacting RadiumOne by phone, and was immediately met with either a voicemail prompt, or hung up on by their phone system when I tried to actually get a person. Most of the options from their phone system simply tell you to e-mail them, ONE so far offers to transfer to a receptionist, where it promptly hangs up on you.