help im paranoid

hello! this person joined my world today and they showed me quite a few hidden chests in dragonspine, liyue and parts of the desert (i had 100% explo in every region) and they were rREALLY nice, idk if they had followed guides or just memorized the locations of these chests, but because im paranoid, im scared if they used some hacking tools to find them, and if so is that gonna get my account suspended or sth? Have you guys ever encountered this account before its on eu server?

idk if hoyo can investigate that account, cuz i if im wrong i dont want to report an innocent persons account

(im very scared cuz i have poured a lot of time and money into my account and i usually dont let ppl into my world but i was bored)