What do you see when looking at the album locally? Use these settings:
Preferences>Preview>External
Use embedded web server should be on by default.
Preview by clicking on the spyglass icon to the right of the 'Make album' button.
Edited by: RobM on 22 Mar 2024, 19:13
Added to provide more details in response to MarkusD post, to ensure the preview is set to external browser.