Cannot confirm email

I've signed up for an email address with my own domain at Zoho Mail, hello@bleed.space. I signed up using my outlook email address rollovann@outlook.com. I received a welcome email asking me to confirm that email address. When I click on the link, it says that the invitation email is expired, and that I can resend a new confirmation invitation from Profile>Email Addresses.

When I navigate to Profile>Email Addresses in Zoho, only hello@bleed.space is listed under Primary Email. When I click on Add Email and enter rollovann@outlook.com, a message appears saying 'Email address already exists'. How can I verify my email address?

Also, I am not sure if this is related but I have enabled imap and when I enter my account details (for hello@bleed.space) on the MyMail Android app, the account loads but no emails appear in my inbox nor can I send emails from the app (I have doubled checked my login details and the imap/smtp details). I have previously used another Zoho Mail account on the MyMail app using imap and it worked flawlessly, but I seem to be having issues with this account.

Can you help?