HI Alex,
Please have a look in that docs.
Troubleshooting Self-Service Sign-Up
docs.microsoft.com/.../ui-troubleshoot-self-signup
Error:
Self-service signup is not enabled. You receive a message like the following during signup:
We can't finish signing you up. Your IT department has turned off signup for Business Central. Contact them to complete signup.
or
That looks like a personal email address. Enter your work address so we can connect you with others in your company. And don’t worry. We won’t share your address with anyone.
Solution:
Your organization’s IT administrator has disabled self-service signup for Business Central. To complete signup, contact your IT administrator and ask them to follow the instructions on the page below to allow existing users to sign up for Business Central and to allow new users to join your existing tenant. You may also experience this problem if you signed up for Office 365 through a partner.
Best regards
Sebastian
