Can't register! gives an error message.

[Сулейманов Юсуф]

When registering, it gives an error! 

[Theodoro Reato]

Hi there, 

Are you located in Russia or Belarus? If so, you need to check this article: https://blog.developer.atlassian.com/atlassian-stands-with-ukraine/

If you aren't, can you check this article, it contains some troubleshooting that may help you. 

Other things that might interfere:
* Do you have third-party cookies disabled? This error could be caused by a 3rd party browser extension that might mess up with the login request on the Atlassian page. What you can do is disable all your browser extensions and then attempt to log in. Once logged in, you'll then be able to re-enable your browser extensions and you should be good to go.
* Do you use an ad-blocker/content blocker? If yes try to disable them in order to log in.