Crossells and related product not working with grouped products

[rofokken]

Affects Version: v9.0.0
Magento Version: 2.4.8-p5

Group code is empty when fetching grouped recommendations for configurable

vendor/tweakwise/magento2-tweakwise/Model/Client/Request/Recommendations/ProductRequest.php:75

It is defaulted to product id which fails to retrieve data from endpoint:

Working example: https://gateway.tweakwisenavigator.net/recommendations/grouped/0b8ea73f/10001213932-10001213931/RPR

Failing from pdp on website:

https://gateway.tweakwisenavigator.net/recommendations/grouped/0b8ea73f/10001213932-10001213932/RPR

Group id is invalid no products