Cryptotalk site will have your IP logs so cleaning cookies on your browser has no effect and if you are banned once means you are banned so you can create new one using VPN and get paid from the beginning but they also stopped new registrants so people who got barred has no other way to get paid and I am not sure that still pay per post campaign is still active on cryptotalk.
There are still activities and they are paying people and I read from one post coming from the admin that there will be a signature campaign, it's been discussed months ago but they have not yet launch one, the one that will benefit are those coming from higher rank