First things first. I have a broken keyboard for my tablet (the wire for w-e-r-t and u-i-o-p is severed and un-repair-able) so I have always used my on-screen keyboard.
Last night, I accidentally touched my fingerpad with a moist finger, and have probably caused a key-combination that has switched those letters in the on-screen keyboard with the numbered keys above, but only when I use the touch screen to type, not the fingerpad.
I’ve googled the problem, but the only answers I get are the “language” fix, which is really not the problem.
Any ideas about what I’ve done, so I can reverse it?