keyboard slufdgy

I use my keyboard frequently and these days it seems worn out. Is that possible for a keyboard that is flat on the screen. It seems to miss letters a lot, and my I and 8 seem to be interchangeable. Just wondering.

Hi. I’ve been using the pop up keyboard on my ipad mini A LOT. Now the keyboard is a little erratic. Some letters I press on don’t come up. It just feels sludgy. Anythung I can do?