Backup Question (External HD to pcloud)

I’m setting up a backup if an external hard drive to my pcloud, and I have come across the following issue. I need the help of this awesome community.

I used to run arch on my laptop, and I set up a backup of a usb hard drive to my pcloud storage. This was extremely convenient, because all I had to do was occasionally connect the drive, start the backup service, and that’s it. Any changes to the drive would automatically be backed up in the cloud.

Now I’ve switched to bazzite,and the pcloud doesn’t recognize the external drive as the same device anymore because the path has changed. It treats the drive as a part of the “new” laptop.

Does anyone have any idea how I could get around this? I don’t mind starting from scratch again, I just want to find a way to avoid this in the future.

Note: I understand that I could just get a raspberry pi or something similar to act as a new dedicated “pcloud backup device” or something like that. I’m looking first for a solution that would work in the case of a new linux PC veing used in the future to do this same job and not loose the connection.

Edit: I think it would be enough to change the name of the PC, either just for the (pcloud) flatpak or the whole PC.