Hello, sorry can't verify as my settings are managed by my org.. besides changing in Teams the support page says.
"Important: Microsoft Windows can block notifications before they appear in Teams. Follow the instructions in Change notification and action settings in Windows 10 to make sure that your system settings allow apps (including Teams) to send notifications to you."
Perhaps you've already seen that but attaching anyway.
All good. Notifications seem to be working now and I can see the Teams app in the W10 notification settings. I'm not 100% sure what kicked it into gear, but I suspect my Teams notification settings were a tad too restrictive.