Unless you did something to your SD card, your default drum sets are most likely still available to play on your pedal. Here’s a helpful starter link with some tips on what to check: Songs not playing in pedal - #2 by persist
Open your SD card by double-clicking on it and look in the DRUMSETS folder. There should be 10 files with a .drm extension in the filename. Is this correct?
I’m assuming you installed the BeatBuddy Manager (BBM) Wizard which should have created a bbworkspace folder in your PC’s Documents folder.
You can use the BBM File Open Project and navigate to your SD card and press Open. When prompted, copy the project from your SD card to your bbworkspace folder on your computer and approve future synchronization.
Did this fix the issue?