There can be several answers to this question. The hostess may be sick, on vacation, or disconnected. She may be receiving the notification in her spam folder. Therefore, it's important to send a reminder via text message.
Additionally, I invite you to carefully read our recommendations (especially "Anticipate"). Sometimes, hostesses don't respond when it's too last minute (within the week) or if the request gives the impression that you're treating them like a hotel.
If you've followed all the recommendations and still haven't received a response after 2 weeks, in the messaging system, you can report this hostess as "inactive". After 2 reports, their profile is deactivated until we manage to contact them.