I have misplaced my charger, and noticed the company website is non-existent. Is there a place where I can find a charger...

I am in the trouble shooting process of trying to find out why my device is malfunctioning.

If you follow the steps on one of our repair or replacement guides, this should give you a good idea of how to take off the back panel. Since you already have taken out the screw. Just slide off the back panel by pushing on the back and moving it upwards. (Tablet is in a vertical direction)