I had started my first ever palace of the dead solo run, i was at floor 65 and i was walking towards the exit of the floor and randomly got a server connection is lost error, upon instantly logging in as fast as possible again, i saw myself out of the instance, and seen that my run counted as if it had a death and said i couldn't continue any further.

This was really unfortunate and feels pretty bad.
I'd hope no one else has to go through this so i'm submitting this here as i've been told it's sadly not possible to restore my progress by a GM.