user manager database is corrupted everyday

helo! i dont know what happend my user manager.. before i am using RB1100ahx4 every day inside data corupted automaticaly.then i buy a new mikrotik Rb100dx4 but this router also showing the same problem..

More details please.

How do you restore the database every time?
Looks like there is an error in your backup.


Do Export in file in Terminal on Running System, reset and Build new one… restore by script

before everything its wotking fine but after i update my mikrtik then my mikrtik its stop working . i restore my mikrtik with my backup . then every after 4 5 hour my userman working slow and some time its shoping invited user name and password

plz bro tell me how i do this think ? send me secript . because i am new