The challenge with CJ is they're 100% pro-advertiser and rarely if ever side with the publisher. They make their money from fees charged to use the platform. Have almost no customer service for smaller level pubs because on CJ it's expected as a merchant you manage your own account.
Because they always side with the merchant they have quite a bad reputation with larger publishers for not getting them paid. They have a massive TOS that almost everyone is violating in some way. For example I ran ppc direct to an offer, at the end of the month the merchant said I violated TOS. TOS said I needed to send to a 3rd party site/page vs. direct to their offer. They didn't say the traffic was bad and why they didn't like it. Just I violated TOS and they weren't paying. After a few calls from my atty later it got resolved. But this can be a regular occurrence with them.
With that said they have a lot of amazing merchants and as with your AM on a CPA network make the affiliate manager for the merchants your best friends and most things should go smoothly.