Cannot connect to Gitlab

Previously, I have CircleCI account with email A@mail, I connected to Gitlab with user B@mail, it already successful to integrate with repository and build on CircleCI.
Because my circleCI account (A@mail) integrated with wrong account (gitlab account should be A@mail). I logged in with CircleCI account (B@mail), but when I wanted to connect to Gitlab (B@mail), no error message but it can’t connect to the Gitlab.
Anyone know how to solve this issue?

Hello

You will need to email our support team to unlink your accounts which we will be happy to help with.

We look forward to hearing from you.

Kind Regards
Owen Oliver