Avoid using Hotmail, Outlook, or Live accounts. These services frequently shadow-ban the site's automated emails. Gmail usually works, but it almost always lands in the Spam or Junk folder . Check there specifically.
Which are you currently using to try and sign up? cs rin register not working free
Sometimes the registration actually does work, but the site times out during the confirmation page. Avoid using Hotmail, Outlook, or Live accounts
CS.RIN.RU emails are often flagged as high-level spam by major providers. Avoid using Hotmail
Keep the page in its original language (English or Russian) while filling out the form. Use Incognito Mode (Chrome) or a Private Window (Firefox) to ensure no old cache or cookies are interfering with the submission. 5. "Username Already Taken" or Ghost Errors