Thanks guys. All sorted now. For anyone who has a Spanish mobile registered from the early days, as I did, you do need to manipulate the system a little. The app only offered me the option to add a +34 number. What I had to do was go onto my computer and attempt to register and say that I didn't have a smartphone but had a mobile capable of handling data, which was one of the other options. The Web site then took me to another page and allowed me to register a foreign mobile. Entered the number then went back to my phone received a code all done. Cheers.