tachiyomi VS Neko

Tachiyomi[0] is a FOSS comic reader app for Android which has support for extensions to source comics from different sites which are unrelated to Tachiyomi

Tachiyomi already removed their extension list which contained both unofficial and official sources for comics[1]

[0] https://github.com/tachiyomiorg/tachiyomi

if you are on android: https://github.com/tachiyomiorg/tachiyomi then google for which extensions to look for marvel wise, they have most/all as i read them before through there.

I think you are right about it being a cache issue. I wonder if it is related to this: https://github.com/tachiyomiorg/tachiyomi/issues/8827

I don't use it, but if you're on android look into downloading Tachiyomi. Lots of people recommend it on this subreddit and it looks pretty customizable. It can pull from the different manga websites out there I believe.

Install from official site: https://tachiyomi.org

neko(fork of tachiyomi that works well with mangadex) for manga

I use neko which is a fork of tachiyomi. But I'm sure the built-in browser would work fine

You could use Tachiyomi Neko https://tachiyomi.org/forks/Neko/ and do the same thing again.

Here Tachiyomi Neko

Neko - this is a mangadex focused fork of tachiyomi. if you are a diehard mangadex stan, this is the tachi for you. Sign in and instead of hunting down all the manga you are reading, you can just import it all into lists that you have already set up or into categories you already have based on status - read, not read, dropped, etc]. Really strong filters that you can block updates from certain groups and languages from popping up when you update your library.