Dear nicholas.j.curley & mcompagno,
unfortunately we can't resend you a backup email. Avast has a zero knowledge about your passwords so in this situation we don't have a way how to regenerate a backup mail for you (because authorized device generated the data in the backup mail).
Only thing I can do for you is reset of your synchronization group so you can start from scratch. Please note that the data you’ve synchronized in the past will be lost. As you can’t find backup email and you don’t have any authorized device they are actually lost already. Only you with authorized device can read the data .
Data you have stored locally (even if you are in pending authorization state) will not be affected. Also note that before we perform reset you should turn off synchronization on all devices you have tried to turn it on already. We can guide you as we know which devices are in group, unfortunately in your situation that’s almost all we know about your data.
If you want reset your account, please write me.
One note to your sentence " I already have synchronization turned on". Our data showed that your desktop is not authorized (you are logged into Avast Account but no active device authorize you). Please note, that if you are logged into Avast Account it doesn't mean that synchronization is automatically on.
Can you please look at your Windows version on Settings -> Passwords -> Synchronization and what message do you have there ?
1) Your passwords, notes and autofill data are automatically synchronized on all devices which are connected to the same Avast Account
or
2) To connect with your existing vault you must authorize access first from any other device...etc
Thank you.