My detachable keyboard isn't working properly

Hewllo! My dewtachablew keyboards is working, but not so well. Seew, I powerewds it up this morning ands dsiscovered that a lot of kewys I prewss now have double functions. Whewn I press E, it adds a w to it. I have to backspacew ands remove it manually so you can read. Sometimews whewn I prewss backspacewit takews mew to googlew, when I usew the arrow keys, if i press lewft it'll control the volume, taking it from the highewts volume to mute each press. If i press right, instead of taking me to the next letter over, it'll take me all the way to the ending of my sentence. Now, the E problem just stopped, but I'm still having problems with alot of other keys. If I press Alt Gr, it won't bring up my on-screen keyboard, or Alt. It's honestly anightmare. I turned it off, it's fully charged, I checked other posts but couldn't find anything that has my problem, apartial working keyboard, space bar won't work at times, but works sometimes its- Eugh. I checked if my tablet itself had a firmware update, nothing. Does anyone know how I can fix this? This has happened twice already, once in the past, I swapped the keyboards with afriends after we agree'd, and now this one.