Hi Fmj321,
A warm welcome and thanks for posting on our community forums. Firstly, you are not doing anything wrong, it seems as our valued member @Adduxi is correct, we will have to book you in for a manned installation, as the fitting you need does not seem to be there.
Looking at our systems we can see a visit has been booked - to check the date and time please log into your online account here.
Kind regards Jodi.