It's been so long I literally forgot the entire story. Someone please explain what is happ...

It's the perfect opportunity to just re-read it all, no?

I did 3 times but now I will only re read after it finishes. Why does it update so infrequently?

Because the first translation group dropped it, then it was picked Up by different people who dropped it as well and now a new translator took over. As far as I know the main series is already completed in the japanese version.