I have a user who has tried to log into Flowdock using his CA Agile Central login, but keeps getting redirected to the "new account" screen, which of course then gives an error that he already has an account. I've tried sending invitations and join links, to no avail. He's not listed as a Flowdock user in the Admin area or anywhere else that I can find. He's tried multiple browsers and the windows app.
Would appreciate any help and suggestions for how to get him logged in.