Thank you for linking them here. To address "you provide a script tag with data attributes. Don't do that!" - we do not do that anymore. It was in a first version of a script which we are not using for quite some time now.
Start-up. Online unmoderated task-oriented UX studies, user recordings with advanced filters in search, tree testing, card sorting, prototype testing(BETA).
It also has solutions for recruiting real users on your website and reward feature to motivate them.
Please, check it out. Any feedback and tips for our platform and how to get it out to the world will be very appreciated.