Thank you for your detailed explanation and response.
Even when I open EOF and select "Double BPM," it just shows the exact measures and the BPM at double speed, so I was confused and didn't know how to use this, so a simple explanation would be very helpful.
For now, I've just started rehearsing the first song I've corrected since returning.
The EOF function has changed too much.
All my settings were lost and I can't remember what the settings were before.
The NAS containing the gp5 files was broken.
It's already difficult to hear certain sounds, and now it's even harder to hear them. This may just sound like an excuse, but as the condition has worsened, I was prepared for a mountain of things that needed to be fixed, but I'm now scratching my head at how much I can't hear and how out of sync it is.