Yeah, according to Arabic spelling rules, it's always written with the following word, making it appear to be "stuck on the front" of that word. In linguist terms, we call 'wa' a "proclitic" - it leans on a word that comes after it.

Yes, that's the rule, but as a native Arabic speaker, let me tell you, between me and you, that this specific rule is not that strict; no one will care if you split the "and"/"َو" from the next word.

Yes I think it's meant to be like that. When I tried answering with the 3 separate words (so using 3 buttons) it marked it correct but said I had an extra space! So I went back to using the 2 buttons with "George" on 1 and "and Rosa" on the other.

According to responses in other questions, some countries have a space between the "wa" and the next word, and some don't. The standard for this course is to not have a space, I believe.