By default, Safari will block all third party cookies, effectively preventing you from reporting as an authenticated Marker.io user.
On Safari desktop
To fix this, in Safari, simply go Preferences and then, under Privacy, make sure to uncheck Prevent cross-site tracking and Block all cookies.
On Safari mobile
If you're using Safari Mobile on your iPhone, go to Settings > Safari. Under Privacy & Security, Disable Prevent cross-site tracking and Block all cookies.
That's it! You should now be able to report bugs as a logged in user.
Other mobile browsers
Having issue on chrome? check this article https://help.marker.io/en/articles/4807959-widget-is-not-showing-on-mobile-how-to-fix-it