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Can you give me the breadcrumbs to check the Launcher notification badge option enabled in system settings? I've checked all the above but am not clear on the launcher/system settings.
Along with all of these points, there is a small adjustment you need to check because I did all this and still had the issue and was about to just uninstall it all and start over...when I noticed this and it fixed it for me. In the Gmail App: three lines top left > Settings > email account > Notifications...make sure the 'All' button is chosen...as sometimes it can be set to only 'High Importance'. This was on the Samsung S22+. Hope this helps someone.