Adding Rooms

I need help with adding a new room type. 

When adding the new room type it automatically choose the name 'Tent' and there is nowhere where I can change the room type and name. 


You will have to contact Booking.com directly.
You do so via Extranet -> inbox -> booking.com messages -> compose new message

I tried to add a room type and I am able to choose from all the types listed. I suggest you contact BDC.