My first thought would be to try and see if the sd card is working with the switch regardless of hekate. Try loading a game from it normally. Sounds like you said it does in a previous reply. The second thing that sticks out to me is the other post you found notes a 3 hour restore of the sd...
Might have been asked before. My switch was stolen and would like to retrieve the serial number for the police report. Is there anyway to get the serial number from a nand backup?