Hi! I'm a new user, and I created a server to play with some friends yesterday. We played for a solid 2-3 hours, but when I logged back on today, none of my inventory was there, my skin wasn't showing, I spawned at a different spawnpoint, and the server didn't recognize me as OP.
None of us are cracked users, and when we were playing last night the world did continually say prompts like "saving world."
How should I go about fixing this?