Sorry to hear you can’t get it working. I know it’s gotta be frustrating.
Does your SD card contents appear similar to the contents from my screen shot? If it still appears like your posted screen shot, it could be that your SD card is locked.
Verify that you are still using the correct power adaptor for the pedal. Make sure no cables but the power cable is plugged into your BB pedal.
If you want to try something a little more drastic, you can try the instructions at Pedal does not power on. This solution usually solves problems with a bricked pedal (which yours is obviously not) but it’s about the only thing I can think of that we haven’t tried.
Certainly understandable if you’d prefer to get in touch with Support, support@singularsound.com.
Let us know how it turns out.