on screen kb not working, only numbers

[nFiniti]

If I do a hard reset, the on screen keyboard will work fine, after an hour or so, not sure how long or what happens that stops it from working, but when I pop it up, it only allows me to press symbols or numbers, not letters. I'm using the phone keypad, its easiest way to type fast. so when I press a number to insert a letter, only the number pops up.