You can see all the listings assigned to a promotion from the main promotions page in your Guesty dashboard.
Step by step:
Sign in to your Guesty account.
In the top menu, click Revenue Management.
In the menu to the left, click Promotions.
Find the promotion you're interested in and click the number under "Assigned listings". You can use the filters above the list of promotions to narrow your search.
You can see all the listings that are assigned to the promotion and you'll also be able to see which listings the promotion is activated on. You can reactivate or deactivate a promotion on a listing if needed. Learn more.