I faced the same problem recently even am not resident of one of the restricted countries. I was suggested to clean the cookies from of my browser and it worked well.
If you are from a banned country, you may just use a VPN, then you are good to go. Many people confirmed that they are using this method but am not sure if they really got paid for posting.
I haven't cared for that forum for a long time since long before users from my country were banned there I only saw developments. and in the end, the IP for my country was banned since then I no longer visited it.
there was even a colleague from my country who tried to use a VPN but that could not change as before, because the yobit account where the payment of 1000 sat was also banned.
Afaik, Yobit exchange enforce kyc for its users when they reach a certain level of withdraw limit. So it's still possible to use vpn when registering a new account in Yobit and Cryptotalk, because with 1000 satoshis per post five posts daily it would take a long time before reaching the minimum withdraw level.
I am not sure if anybody used this method, but i just imagine what banned users can do to get benefit from the forum as i don't expect someone using a vpn just to use the forum as a source of good contents .