I would try ..
Melts with less than 1000 are not allowed be cause lnmarkets does not allow withdrawals of less than 1000sat :(
Ahh.. that's not good for zaps .. i think it won't work , isn't? If i'm not wrong zapping will melt them on LN .. what do you mean for lnmarkets?
It's the backend the mint is running on. Experimental. I have a PR open on nutshell.
Which backend?