How to contribute to Tweakers' pricewatch?

Hi! I have a question on Tweakers, which many of you probably know about or use. I've been using it for years, including the pricewatch/wishlist functionality, but I've never found a way to contribute to its pricewatch functionality. Is anyone here doing that?

Specifically:

• I'd like to be able to add or remove a tweakers<->external website association. Such as this: https://tweakers.net/pricewatch/1635184/varta-lcd-multi-charger+.html#section-prices The association with the amazon product is wrong here, but there's nothing I can do to fix that.

• I'd like to be able to link already existing tweakers pages to new external shop pages.

• Ideally also be able to add new items, etc.

It's probably possible, because if tweakers already has integration with a website for some product, then probably the same "price watch" functionality can be applied to other products within the same shop as well - assuming somebody links the correct products of course.

Thoughts?