Reporting, ¿Cuántas naranjas quiere comprar? Somehow they are only accepting quieres...
Yup. Also reporting ¿Cuántas naranjas queréis comprar?. Gotta practice that vosotros!
I've reported it too. It's still not accepting the "quiere" form, which I like to use from time to time just to practise.
Why is "Cuantas naranjas tú quieres comprar?" incorrect?
If you do include the pronoun in a question, it should go after the verb, not before.
Why do we have to use the familiar form?
No need for the familiar form here.
Why not "quiere usted"? Very confused !
"... quiere usted comprar" should be acceptable.
Why is this not correct? "Quieres comprar cuantas naranjas?"
Question words should go first in the sentence, so it should start with Cuántas.