I used this link to create a new MTD agent account.
https://www.tax.service.gov.uk/trusts-forms/form/registration-of-a-trust/new
HMRC must have changed their procedure, because a few weeks ago, i went through and created it and it gave me access right away.
I am also in process of submitting my first trust registration via agent portal.
I tried to create a new agent account to see if I was having any issues. I managed to create an account but then got this message:
Request access to Agent Services
Before you can sign up for the new Agent Services account you must request access. It may take a little time to respond to all requests, but we will endeavour to respond as soon as possible. Please email us at trust.queries@hmrc.gsi.gov.uk with the subject line, ‘request access for Agent Services’
I never got this message a few weeks ago. I don’t think it was more than 2 weeks ago!.
Sameera Nathoo