There is more info here if someone is curious:
https://kakuyomu.jp/users/AmagiTomoaki/news/822139837691594826
Seems like this was a "we can't advertise this!" problem, which imo is bullshit considering we have mangas like Redo of a Healer still going, so in reality it is likely the publisher going "yeah, no, we take that back, we don't want your work being published under our name anymore", that along with the low sales of course.
I dunno how accurate google translate was, but seems like the author is actually considering some things for a possible comeback (likely a reboot I suppose, although everything is very vague and unlikely), he mentions turning Ante into an "older sister" type instead of a loli, and perhaps censoring the amputated elf girl part quite a bit, saying those things should have been made from the start.
In other words, if we ever get an anime or another comic, expect Ante to not be Ante anymore and a lot of dark things to not be so dark anymore. It is a pity, really.
There is also an explanation for the lack of releases btw, but to sum it up, family problems.