All covers wrong :not a bug:

[bastek66]

These are all covers for Light novel while there are only 3 volumes of manga out
https://mangadex.org/title/24213/29-to-jk/covers/

 

[Pika]

A report on the manga would be better than making a new thread about it.

 

[Teasday]

Not a bug, use the report function like Pika said