"Judo standing wrist locks"... Mmm, that would be another red flag (of which there seems to be many!) about that place. I wouldn't bother with it again if it were me. Just sounds like too much BS.
If you felt comfortable telling folks where you can travel to or the geographical areas you can train in, someone on here might know of an alternative Karate school near you.
"Let your food be your medicine, and your medicine be your food"