I, too, have this same issue. Which is why I yanked my original listing from AirBnB and use other platforms that show me my guests email. I have just recently listed another new home though, as I was told they revamped the platform. Yet I'm back to the same old sh*t! It's SO stupid that we can't have more info on people STAYING IN OUR HOMES!! You can find almost any email address, so what's the big deal, AirBnB?? I shouldn't have to spend so much time hunting down info that I NEED.
Anyhoo- I have instant book, with 3 days out, so I have time to do the forms. AND, I say, in my very first Rule that pops up when someone is about to book, that they can not book if they are not comfortable with sharing their email address. And I blame it on the Resort as the Resort will not give them access. Don't like it? DON'T BOOK. But, of course, I will get idiots who DO NOT READ. Then I'M the bad guy, get the hit for having to cancel them, etc...??!?! Grrrrr!
I'm sorry, but it appears the revamp was not to the owner's advantage. I will probably be removing my homes again.