What do you mean by "misfiled"? Do you have filters set up to send emails to different folders? Or do you mean emails that did not get to the Inbox or what? Did you try running a search for it?
What I meant is that after reading an email, I wanted to add it to a folder. When I clicked MOVE, it went into another folder and I don't know which folder it went into. I did try the search option, but no luck. In addition, I can no longer open any of my folders to see what is in them.
When you select an email and then click on the Move icon in the toolbar, you then have to select a folder to move it to. They should not move by themselves. Try signing out of the account and back in again, then run the search. Also see if you can open the folders normally.