Hi there;
Ask them to create a new listing ASAP and to let you know as soon as it is done so you can apply nice more. They can also extend you a private invitation. I will tag @Therese and @Angela_L to further assist you.
All the best.
The sit arrangement needs to be confirmed and accepted officially on the site via both your accounts, otherwise you wont be covered by any of the TrustedHousesitters benefits and you will not be able to exchange the review or feedback.