This is the other thread I was referring to: https://forum.inaturalist.org/t/add-observation-automatically-tagged-my-observations/8203/19. It has happened to others with simply the default file names as they came from the camera or phone (for example caused be months names like ‘May’ in there).
Don’t give up on iNat yet. It is a very friendly and helpful bunch here and I’m sure your problems will get sorted and if it’s a software problem it will get fixed. This time of the year is probably the worst though for getting quick responses from staff/mods. They deserve some time off too sometimes!