Hi, freeyormind31. I just asked technology team.
This problem maybe caused by your account root data in the path of C:\Users\dusx\AppData\Roaming\Maxthon3\Users\XX has been carelessly deleted.
note:XX is a folder named by your account.
Usually, if this folder has been deleted, this phenomenon will happen, as shown in the following picture you sent me.
Did you clear any files by manual way, just before this problem happened?