Thank you for reaching us!
As far as I can see you have already raised a support ticket reporting the issue (Ticket ID 1356511). I assume you have followed the steps provided by my colleague. In case you are still esperiencing the same issue, I'd kindly ask you to update the ticket that way we will be able to assist you further.
Have a nice day ahead!
I'm currently unable to login Linnworks, clicking the login button generates the following error:
You are not allowed to authorize. Please firstly close excessive active sessions and try again.
Thanks in advance.