When I invite person to the team, I get an error like in the screenshot.
Hi @Denis_Linczevich, welcome to the forum and sorry for the trouble here!
I recommend you to contact our support team to investigate this further: How to contact our Support Team email. Unfortunately I don’t have the tools in the forum to identify why the invitation is not sent!
I hope the issue is solved soon! Let me know if you have any other questions.