Full Disk Access issue

Hi folks,

after upgrading to Big Sur, I get these annoying messages for full disk access.

- Followed the messages - no effect

- Reboot - no effect

- Uninstalled - reboot - installed - reboot - no effect

Got some advice from Twitter support, didn't work:

--> The output to "sudo sqlite3 /Library/Application\ Support/com.apple.TCC/TCC.db "select client,auth_value from access" | grep -i sophos | sort" in the terminal window is: "Error: unable to open database "/Library/Application Support/com.apple.TCC/TCC.db": authorization denied"

Could you help me out with this one, step-by-step, please? Thanks.