Greetings of the Day!!
I would like to inform you that as of now, the Marketplace Module is not compatible with the Magento 2.3. We are upgrading all of our Magento 2 Extensions to Magento 2.3 version. Once modules are available, we will provide a free upgrade on modules purchased after 30 November 2018.
Thanks for contacting Webkul. Please feel free to contact if you have any query, we are just a ticket reply away.
Thanks & Regards"
I purchased the extensions because their own documentation says they provide updates for life for free: https://marketplace.webkul.com/knowledgebase/provide-module-updates/ I also took a screenshot for when they inevitably scrub that: https://d1lu8vbgap5ai0.cloudfront.net/webkulscreenshot.png
What is the best way to report this kind of false advertising?