Did you possibly import the logins from a CSV file as that can be a possible cause?

• https://support.mozilla.org/en-US/kb/export-login-data-firefox
• https://support.mozilla.org/en-US/kb/import-login-data-file

You can open about:sync-log via the location bar to see if recent Sync logs are available. You can upload the file to a website like Pastesite if you can't post the content of the file in a reply.

• https://pastesite.org/

Hi I am sorry I don't understand this. I did not use CSV file. Last week, I made a new account, saved the login ID and Pw on one device and despite trying to sync, the same login id and pw is not available on the second macbook. Why? Should it not sync?

Hi Is there a way to contact firefox support? There is no way I can find

Did you open the about:sync-log like I suggested above to check if there are Sync error logs available ?

In the about, there is no sync log. Where can I find sync log?

You can paste/type about:sync-log in the location bar and open this page like you open a webpage. The "about:" protocol is used to access special pages. You can find all available about pages listed on the about:about page.

Got it, thanks man. I see a bunch of error files: error-sync-1683597120558.txt error-sync-1683607863261.txt error-sync-1683643967205.txt

Etc, the list is very long, opening the file is a wall of text in each