This plugin uses bstats.org which helps me improving the user experience by collecting anonymous data. You can disable this in config/bstats/config.conf.
GriefPrevention flags
Use those commands to allow spawning of Holograms on server startup:
Some other plugin removed it. Either you have a clue which it is(latest added to the server) or you have to start from a fresh server and add one plugin after another. I assume the removal happens at a server restart.
I have problem with ArmorStand because of GriefPrevention, where I had “entity-spawn” on false (I think). Try to place regular ArmorStand and restart server.
Another problem is with CatClearLag, which is automatically removing all ArmorStand. You need to add this to the config (as I can remember)
That’s really weird. Up until now custom data that doesn’t belong anywhere anymore is removed. I would suggest backing up the world and then delete the armor stands that may be responsible for that. (use the kill command with type armor stand and radius like 5).