I got a bluetooth keyboard because the spacebar on the laptop was hard to press (but still worked). Since I used the bluetooth one, other keys have stopped working (eg, the letter "i" becomes the numbe "6"). So now I can only use that laptop with the bluetooth keyboard. What is happening?
This is very unusual but I think you should see a technician check if there's dust or water on the keyboard. if so, it'll be fine after cleaning. else, you should contact the manufacturer for a warranty.