What are your IP Session validation settings?
Here is my load settings:
Look into your Security settings
Attached below is a screenshot of my security settings. I just changed the Session IP validation to A.B to see if it will fix the issue as I read in this topic (viewtopic.php?f=46&t=2015965). Please if my settings are wrong, kindly give me the recommended settings.
Check the first post, I've already updated it on how it was solved!