https://feedback.minecraft.net/hc/en-us/articles/360004166751-Marketplace-FAQ

The FAQ has a URL for Razzleberries listed of portfolio.razzleberri.es, but that is a non-existent subdomain, and just takes you to a generic Wix 404 page. Their actual URL is just razzleberri.es, and the only way to actually contact them is via their Discord server at this link: https://discordapp.com/invite/3edwVcv

I've reached out to them to address the bugs in the RTX Beta map that they have created for Nvidia that is currently being showcased, but right now you are directing your players to an invalid link for support of any maps of theirs in the Marketplace. (And actively closing tickets without providing an accurate way of reaching the content creator - not good.)