I haven't been working with KMA for a long time, but my opinion is quite positive:

Good support - they will always help, but sometimes you have to wait quite a long time for an answer...
The Affiliate Program organizes various contests - this is a good incentive to increase the turnover for any webmaster)
Call Centre - always a problematic thing because of upsells and newbies who are constantly calling them... KMA doesn’t differ from the other affiliate programs...
Approve – approve is as everywhere else, not better or worse than others.
If your traffic is not motivated or a fraud, KMA will always make payment and you can withdraw it not only to the wallets).
And they also do cool promos (remakes on the song “the ice melts”, etc.) - very creative)