Summary
If you are using an older version of the Wishlist plugin then you may be receiving Wishlist submissions that include the customer's details but don't include the list of products. This is due to a Squarespace platform update.
Background
Customers who submit their wishlist may have submitted their form without the list of products. This is due to recent changes on the Squarespace commerce platform.
How to solve this issue
This issue is fixed in the latest version of Wishlist.
Recommended: subscribe for automatic updates
Subscribing gets you the fix straight away, and your plugin will be updated automatically whenever Squarespace changes its platform, so issues like this don't come back. You'll also get priority email support.
Subscribe monthly or save with annual billing.
Alternatively: one-off upgrade
If you'd rather not subscribe, you can buy a one-off Wishlist Upgrade to the current version. Future Squarespace changes won't be covered, so you may need to upgrade again later.
If you are not sure if you are affected by this issue or require further support, please
open a support ticket or use our live chat service (available at certain times of the day/week).