Hi,
I can see that i am missing the following attributes across all my pages, where Jlex is implemented:
Author: For each individual review
Name: of the product

On each individual review i also believe it should be listed 'Reviewed item name'
Here's a link to the lates rich result test: https://search.google.com/test/rich-results?id=dpDVjGy1MiLrsffzKTw_1w

example URL: https://studiekorrektur.dk/vi-tilbyder/billig-srp-korrektur