Can't enter test of time

/UPDATE It fixes after relog, didn't lose progress

So I did the 3 floors and now I get an error when trying to do the last boss for 8 ascendancy points. I get a message with "failed to join instance" even though the servers seems fine.

https://imgur.com/a/iulamMU

Is there a reason? I did use a lvl 75 djinn map that said I could acquire more ascendancy points and that had 4 floors.

I am having the same problem