Note: this has nothing to do with Envato or general marketplace, the one responsible for that is the author of the theme you purchased, so I would suggest contacting him.
New dashboard is great if you ask me, I’ve been using it for quite some time as it was available in form of the plugin (mp6) and I am very happy to see it live now.
UBL saidThat makes no sense.
Yes you do!
You have to register with WPML and Mercedes works with you in regards to acceptance in the theme.
Without having their permission you may be in breach of their copyright policy, if they have a trademark then you will be in breach of that.Please check the rules on their site
That is as if you say that all keyboard manufacturers have to get permission from Microsoft to state that they are compatible with the Windows OS.
Yes you should not use the badge they use in “multilingual ready” program where they test your product, but noone will “sue” you if you state that your theme is compatible with their product.
P.S. I’m talking from the perspective where your product really is compatible and you have tested it, but did not confirm it with them.
Note that even if they bought the extended licence, it does not grant them multisite licence, it’s still restricted to one install.
No, you don’t have to be listed.