Please read this FAQ: Closed beta access
If you registered for the original closed beta access but haven’t redeemed your closed beta access badge codes, or you have never received the email for closed beta access – The codes that were sent out to everyone have now expired and are non-replaceable. You will need to register on beta.teamspeak.com to join the current registrations if you want to join the closed beta. (The final codes for the original beta signups were sent out in January 2020 and these codes expired in the summer of 2020).
