new uploader says for readers who've read up to chapter 33 (the desert part you're talking about) you can visit 247manga or kunmanga (i think those are the names of the sites) as they have them and are the original source of those translated chapters. On mangago however, they were removed and will be replaced with new translated chapters of better quality.
It's mostly for new readers so they dont have to face the backlash of having read decent/good quality chapters to crappy and messy chapters from chapter 28-33.
I compared the chapter 28 moony posted with what is one 247 manga and it looks like a copy paste, so what exactly is are "improving"?
no? I went to check and it's different. Of course the context will be the same because it's being translated from the same source, but you can see that moony's has better flow of dialogue, better grammar, cleaner chapters, better typesetting etc. etc. It's doesnt have the same quality as a scan group, sure, but it's definitely better.
What happened to the latest chapters? Where they're walking through the desert and one of the arc angels keeps attempting to kill her? I could've sworn on my life they were uploaded....