Trial of chaos / server dc

Heyo
The usual, I go chaos trial, clear a few stages for like 10-20 minutes and then server dc.
As usual i go back to chaos trial area, entrance to instance still exist but when i click to go inside it just says "instance no longer exists" or something like that.
So maybe do something about it? cba to farm chaos trials if each time i disconnect near the end.
Sekhemas is alright but chaos is ooof.
gl hf
Regards
Me