I was able to get a hold of a class set of iPad mini 2 (md531ll/a), but formative won't load on it

Hi all,

I was able to get a hold of a class set of ipad mini 2s but when I load formative on them, I can’t even log in.

These are running iOS 9 through chrome or safari

Anybody have any tips on getting this to work?

Thanks,

Matt