If you had to factory reset it 4 times and still have issues with a fresh os then you need to return it back to manufacture or store and get a replacement. It sounds like a issue with the os software. Get it replaced or warranty it
Yes it can Heres the part: https://www.amazon.com/Prokit-SM-T530-T531-T535-Adhesive/dp/B016NH64AS/ref=sr_1_6?ie=UTF...-6&keywords=samsung+galaxy+tab+a+10.1+scr... Heres how to DIY Fix: https://www.youtube.com/watch?v=ogVhYYak... Good Luck hope this helps
its a pain in the ass but going to have to take the screen off with a heat gun because of the adhesive. Heres a vid on how to do so. https://www.youtube.com/watch?v=ba5IQ-AtbI4 When off you can take a look at the buttons better to see whats causing them to stick