Hall of Monument rewards "Revoked?"
It was a bug; see the dev tracker for details.
https://forum-en.gw2archive.eu/forum/info/news/Hall-of-Monuments-Issue-06-09-2017/6613606
This happens whenever GW2 can’t talk to GW1. It will resolve itself or you can connect to GW1 manually with your linked account, and enter the game with any character; that should take care of it more quickly.
Your titles and AP aren’t “lost”, just AFK.
John Smith: “you should kill monsters, because killing monsters is awesome.”