Hey just got a new surface 7 after owning a surface 4. I had two surface pens with my 4 and while both work on my 4. Neither is syncing to the 7. One syncs and the top button works but it doesn't write and the other the 7 won't even recognize. The whole point of upgrading to a 7 was to use these pens. Any help appreciated everything I've been able to find online hasn't worked.