Can't verify a new email address to add it to Firefox Monitor

[FIrefoxUser7431]

When I tried to add my Yahoo Mail account to Firefox Monitor, I could not because when I opened the Yahoo Mail message it said I was not signed into my Firefox Monitor account. This is dumb. If you ask me to verify my email address not able to open in Firefox, I can't add it to Firefox Monitor. There is no pathway to open Firefox Monitor to add the Yahoo Mail account. Someone needs to fix this. Its possible to do, because GitHub had me do it for creating an account to enable me to add this issue to your support group. Please fix this so I can add my email account to Firefox Monitor.