Hi, thanks for the update.
In terms of the graphics issue, have you tried using xorg display protocol instead of Wayland? At login time, when you select your user name, a cog appears to the lower right of the screen. Click on it and if it is set to Zorin Desktop it is on Wayland. Click on Zorin on xorg and see if screen resolution improves.
Regarding Bluetooth, I recently purchased an Asus dongle which uses Bluetooth 5.40. I wrote a Tutorial on it which included using Synaptic Package Manager to install Bluetooth 5 package in addition to all the necessary Bluetooth packages:
In terms of kernel I would choose the one that works and stick with that at boot time. To remove the other kernels that don't help, install Synaptic Package Manager (it's in Software). On launch you need to provide your login password.
Once opened, click on Search (top right) and enter the kernel 6.17 details.
When it finds them, right-ckick on the small green square to the left of the listed kernel and select 'mark for complete removal' and then click on 'Apply' button upper left.
Repeat for the problematic 6.14 kernel then reboot.
I need to update my tutorial as I forgot about the pairing buttons on mouse and keyboard.