This server has protection for raid attacks, bots and fake suspicious accounts to keep server and members security you must pass the captcha.
You will keep stay in quarantine until you verify yourself. You won't have access to channels in this time.
You can complete the verification whenever you want, there are no timeout.
Press to blue button, then you will encounter with a code.
By writing the codes you see in captcha field to verification box, you will get verified and have access to channels.
No, there are no case-sensitive.
That's not DeAuth-sided issue, please try to contact with server staffs!
This depends on server configuration. If admin specified kick or ban the members who fails the captcha (refer to this module) mode, you will get banned/kicked out in server. In this case, you only got one chance. Otherwise, you have unlumited chances.