May I ask what exactly was the issue?
I'm having the same problem and cannot figure it out.
Thanks!
Hi
My issue only stopped students from updating their profiles, I was able to update my admin profile. I don't know exactly what the error was, although I was getting my IP blocked when trying to access the cPanel account for the same hosting service, I contacted my providers support team and they whitelisted some mod_security rules, this resolved the error.
hope this helps.
Mike