Tesco Hudl keypad disappears

My Tesco Hudl had a rather glitchy screen ( not a left hand side issue) I did the software update and this has improved it and scrolling is much better .However, after 10-15 mins useage the keypad will not appear and when it does it only allows 1 letter and then disappears again.I'm fed up of doing resets
The guarantee finishes in @ 2 weeks so any advice as i need to phone Tesco Tech support who i have found to be disgraceful liars who will no doubt claim " they all do that " " do a reset"