If you are asking about reaper scans website https://reaperscans.com/comics/668397-omniscient-readers-viewpoint . You can still read here, they are just late in uploading coz they are busy i think.
If you are asking about the novel, i see people talking about reading it in boxnovel. Or you can search in google and you'll see all the novel sites that have this. Novel updates only has upto ch 39 or 40 i think, so skip that lol.
I read it in an app called NovelReader, since I wanna read it offline after downloading it, hahahaha. Many other light novels are also there, like Everyone Else is a Returnee (very highly recommended ), Taming Master, The World After the Fall, and may more! Highly recommended if you want to read offline!
Yoo joonghyuk is a REGRESSOR not a returner. This is the reason why i like reaper scans better. Their translations are more close than the novel. For the non-novel reader, i recommend reading reaper scans work more, just see the logo, their translations are much more faithful to the novel.