Question about Velux Touch KLR 3000

Yes, that works. We use both at home and they get on well. However, the operation of the new version is a little less practical.

Yes, you can, that's what I did.

Search the usual sources and get yourself a second hand spare

Velux tried to make things better but made it worse. Yes the device can control all your windows etc but the eInk display randomly updates and flashes.
It does not allow you to have custom room window and blind names : touch keyboard. Maybe a firmware update comes one day but many velux engineers just shake head in disbelief.