I have just created an initiative using Hub Premium and it looks great!. However, when I navigate to it on my phone and try so sign in to the initiative, it opens a new page that shows up blank. Is there anyway to fix this issue? Most of our community users are going to be using their phones to access the site.
Sorry for the delay. I opened a case with ESRI a while back and it's been reported as a bug. It only happens on IOS when you first create an ESRI account and you sign into hub for the first time. After you signin, Safari/Google will recognize your credentials going forward and the issue goes away.