Are they asking for specifics about door code, phone number or address, @Robert1555 ? Absolutely do not give out that sort of thing. The system makes it difficult, so that helps, but if they are asking you to circumvent it somehow, just tell them it is important that you keep all communication on the platform, and that they will receive the exact address once they book.
If the questions are innocent and just "Do you have cats?" or "Are we allowed to cook?" type things, it may be that they signed up four years ago but have been reluctant to take the plunge. It is okay to ask them some questions yourself.