Hello @lnwerner and welcome to forum!
I’m not sure where you are in the process. I imagine you have a live listing? Have you published the dates of your sit? Dates must be published, if not, sitters are not able to contact you.
Depending on your location it could take some days to get applicants.
As sitters are paying members, the listing and tasks must also be attractive enough for someone to want to apply. You can get help with input on your listing if you add the link to your forum profile: