So i bought a Galaxy 10+ tablet (SM-X820) and the hardback keyboard (EF-DX825) and for a week I have tried to get them to work together, the Bixby key works and I can turn the trackpad on or off but no other keys work. With the keyboard connected the on-screen keyboard is not available. Finally I have not been able to register the keyboard with Samsung. So at present a very unhappy person with an expensive piece of JUNK
The Tab S10+ comes with very thin protective plastic on all the edges. If you haven't removed this, it could be stuck between the keyboard and tablet preventing proper operation. I noticed this after my keyboard wasn't making the satisfying loud click when I attached it to my Tab S10+.
If the keyboard doesn't work properly, it may be defective. While you are still close to purchase you should return it for replacement.
