Is it maybe possible that you signed up for Integromat using your email and password rather than going through an SSO? If that was the case, it could be causing this loop since there is no SSO associated with your email address in the system.
I have spoken to the Support guys and we have identified the ticket you logged regarding this issue. If what I’ve suggested is not the case, we’ll further investigate. Either way, one of our agents will get to you soon to help out.