You need the Digital Downloads add-on. Do you have that active and enabled for your galleries?
That has always been enabled but the update seems to have disabled it. It’s asking me for a new license or to pay $99 additional for the add-on.
The update purposefully disabled it because the old Sunshine 2 versions of the add-ons are not compatible with Sunshine 3. There was a large warning/notice about this when the update ran. More info and follow the steps here: https://www.sunshinephotocart.com/docs/sunshine-3-update-and-deactivated-add-ons/
If it still is not working then submit a support ticket here: .
It looks like I should not have upgraded. I closed down my business a few years ago and only really use Sunshine to share images and do some charitable work. If there is another solution please let me know. My license shows as invalid: 59612763333ef0263ddfc91a88aa3530
It looks like your license expired 2 years ago so you are not paying anything. Without an active license you cannot update to the latest Sunshine 3 version of add-ons.
You can always revert back to Sunshine 2 but no support is offered for that now outdated version.
You can use a plugin like this to revert back to an older 2.x version: