Cannot sign up: sign up email not received, M365 email account

[Wexi]

I'm trying to sign up a new Atlassian account with the the address admin@ewellness.fi and the emails to finish the account registration are not received at all. The email account is hosted on M365 and the Exchange admin center message trace shows nothing, not even in blocked or quarantined messages. If I send emails to the account from my other email accounts (Gmail etc) the messages arrive normally. 

[Prince Nyeche]

Hi @Wexi 

Welcome to Community, please contact support so they can assist you to check and see if that email is being blocked by Atlassian systems. 

[Wexi]

Yeah, I already created a support ticket based on the other answers I found.