Both are technically correct, but Silas chapters are from the volume release, the other person translated from the individual published chapters from niconico/magapoke, the volume merge the same name chapters into 1 and added a new chapter 0 and 1 for volume 1, and chapter 2 should pick up from the published chapter 1-7 (which is like 70ish pages after merge)
So this is a sequel series I assume? It looks like we just got a very quick recap of the first run of the manga. I'm not sure I dig this new artsyle compared to the previous, less cutesy style.