Priory Golems in Tower of Nightmares
Its per character, so are you using the same character you previously got to the top of the tower?
I have five characters who have completed the tower. Prior to the Fractured patch, they could all use the travel golems to get to the various floors. Since then the golem at the entrance only provides the option to enter the tower at the start of the first level.
The same happen to me.
Here is a Dev response about the issue: https://forum-en.gw2archive.eu/forum/livingworld/nightmare/Tower-Travel-Golems-resetted/first#post3324538