You are using the Responsive UI (RUI) and noticed that the button "Lauch HTML5" is not clickable/available/greyed out.
Reproducing the Issue
Using the Responsive UI (RUI) go to "User Menu", that is displayed when you click in the business user button, on the top right side of the application.
So, will be possible see the option "Launch HTML5".
The option "Launch HTML5" is deactivated, because you have selected "Disable User Personalization Features" in HTML5 under Adapt > Company Settings.
The HTML5 link is in this case always deactivated, this is the standard system behavior. The button can only be activated, if you deactivate the option mentioned before.
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