Please help - complete sign-in and authorize importer for Microsoft Account

What I’m trying to do

Setup the sync with my Microsoft OneNote via my personal Microsoft Account

Things I have tried

I have followed the standard process and been able to authorize my Obsidian Sync’d vault connection via Importer on my iPhone - managed to import a stack of notes via my phone.
When I try to authenticate and sign-in under Chromium on Ubuntu the MFA push goes to my Microsoft Authenticator on my Phone and I select the correct OTP but then I am stuck at the dialogue asking me:
“Are you trying to sign in to Obsidian Importer?
Only continue if you downloaded the app from a store or website that you trust.”
When I select continue nothing happens.
Can I get some suggestions please?
W

Same issue here :confused: . I’m on a regular Windows PC, and when I try opening the page in the browser, it shows the message: “Temporarily unavailable for maintenance, please try again later”