They have a bad reputation for several reasons. One of them is they make deals with affiliates and then back out of those deals. For example they may promise to pay a certain CPA but if they don’t feel that they’ve earned enough money off of those players they will back out.
They are known for having different affiliate managers claim different things.
They will threaten certain affiliates. For example if you don’t deliver a certain number of players they’ll threaten you with lowering your commission to 20%. (even if it doesn’t say this in the terms and conditions)
They are known for phoning affiliates at all times of the day every day for months on end. This is the program that forced me to change phone numbers. I had half a dozen managers calling my house at all times of the day whenever they discovered a new website of mine in the search engines. This was nonstop and they refused to hear no. I have private whois now to avoid my new number being compromised.
There’s a whole bunch of other stuff just use the search function.