The QC35 showes as "not supported".
Hello @01green_basement_55 , do you have latest Gadgetbridge installed? You can check by opening Gadgetbridge → menu → About, and see the Version. Current version is 0.64.0. If you do not have the latest version, make sure you have a backup of your data as per our wiki here and update, you can find the latest version on F-droid.
It is also possible that your QC35 has a diferrent device name but let's first establish your Gb version.
Deleting a branch is permanent. It CANNOT be undone. Continue?