Got in e-mail contact with retrogate and he gave me the address and will see what needs to be done and repair or replace. Awesome. Months ago it was fine. Today I try it many times and always scrambled.
Tried re-extracting firmware to the card and same thing. Hitting reset sometimes gets the sd2snes banner to load but rest is scrambled. Sometimes the Date and Time is correct. Unreadable text is mixed in to parts of the screen.
Do you have any issues with regular game carts? You should definitely try or on a different console if you can. Are you using original hardware or some sort of clone system?
Tried with SNES mini and same thing. Tried with a different SD card. My copy of Yoshi's Island works fine.
send it for for servicing/ replacement... i guess somewhere the I/O chip screws up after rapid writing or corrupted ~