RB1100AHX4 Dude edation ARM V6.44

Dear Sir/Madam

I bought mikrotik RB1100AHX4 dude edation ARM V6.44

I configure hotspot with user manager I have done all user manager configuration and I add 100 users too,but now userman database crashed. I could not … failed to add session. attempt to write readonly database

Pleaee to fix this issue I purchased on 400$


Thanks looking for forward