For Android 11, Google has removed the ability for external applications to write in /sdcard/Android/data/. This has the unfortunate side-effect of preventing adbLink from accessing Kodi data at /sdcard/Android/data/org.xbmc.kodi, meaning no backup/restore, no edit of xml files, or any function requiring write access.
Luckily, Kodi has the ability to read its data files from a different location as instructed by a text file: xbmc_env.properties. The new location is /sdcard/kodi_data/.kodi
To work around Google's restriction in your device record, for Kodi OS choose Android 11 from the drop-down menu and save the record. This will point adbLink to the new location for Kodi's files.
The Android 11 restore function will create the directory /sdcard/kodi_data and restore a backup to that location and also write an xbmc_env.properties file. After the restore, Kodi will operate normally.
adbLink's Android 11 backup function will backup Kodi's files from this new location. Other functions, such as xml edit, will work as expected.
This workaround is mainly for Android 11 devices, although it also works on Fire OS.