Server crashing and not saving

hi until today i didn't have troubles with my server, its true that it crashes some times but nothing to complain. Today my server crashed 4 times and normally when the server crash the world is automaticly save but today it didn't. Everytime i restarted the server it went to the last save of the day before. i don't know if the aternos had some troubles today or is an especific problem with my server. Please if some one could help me i would be gratefull.

By the way sorry if my english is not good.

Quote from Roman

Can you tell me when you stopped your server and it wasn't saved?

no, the server crashed and close it self like always when it crashes but normally when the server crash it save everything until the moment of the crash. Yesterday it didn't save nothing of the day and it returned to the save of the day before