You can install copyq as .deb package then you need no permissions and it works probably better. When it is installed as Flatpak you should set the permissions with flatseal.
You can install the .deb package with
"sudo apt install copyq"
(first remove the flatpak)
I read that Wayland could cause the problems with copyq. But you are on Zorin lite that uses XOrg (X11) by default, or not? Otherwise if you use Zorin Core with Wayland try to switch to Xorg. Logout and at login click on your profile. Then a cog appears, click there and set "Zorin desktop on Xorg".