If you’re still interested I had the same problem with a Samsung tablet I purchased online when I came upon your post. I tried everything every one said nothing worked but I had a Bluetooth keyboard that I connected to the tablet and was able to get my email to show up and I just kept fooling with it until I was able to access the tablet through my google email account and was able to change the security settings so that now I’m under the owner/ administrators account. If I can get into the new Samsung galaxy E 8 notebook using only a Bluetooth keyboard anybody can. I still have to call my adult children to help me with my iPhone most of the time. Determination will carry you far, i refuse to be ripped off.