MIRO App - Sign in Failed

I have installed the MIRO app but it does not permit me to sign in to my MIRO account. I just get' Sign in failed - Try again'. I have uninstalled and reinstalled the app but same issue. My MIRO account is fine - I can login and it works fine. I can use the 'Create Board without Registration' option but I need to have a record of all my Boards for this project.

Thoughts?