I cannot register. It says I am using disallowed anonymization techniques.

Due to a high number of malicious registrations, we have introduced the detection of open proxy servers. Unfortunately, if there is NAT or a dynamic IP address on your Internet connection, someone else could have ruined your reputation. If you think that it is the case, then write to us on the online chat and add some information, such as where are you from and who is your Internet provider.