If you open Swift Playgrounds on a Mac that’s linked with the same Apple account, it stays synchronized. You can go to the point where the Next button doesn’t appear (for example, “Create a New View To Share Data”) and complete it from there.

In my case, I solved this problem by connecting a wired mouse. Once you succeed, the trackpad and BT mouse work properly. Logitech Mouse using Unifying USB Receiver would be possible I think.