...Why don't you post an example of your emails that didn't get responses?  Naturally, leave out the names of the providers.

Your email should be cordial but brief and to the point - state the date, time, place and length of meeting.  Don't mention sexual acts in exchange for money.

If you're just giving your screening info with a specific date request, to multiple ladies, and still no responses..... either something is going on or it's just bad luck.

I've received emails/text messages from guys who've said it's the second time they've reached out to me, when I never got the first message.  Technology is not infallible.  So maybe try again, putting "2nd attempt" in the subject line.   :-

Have you read the gals' websites carefully especially in regard to what information they need from you for screening, etc.  If you don't follow their rules don't expect them to follow up with you.

Also, how much time has past since your email?

48 hours is the usual time cut-off before trying to reconnect and/or make other arrangements