I feel your pain - I have an HTX 8X running Windows Phone 8.1. The menus on myUMBC don't play nice with Internet Explorer. Have you tried the UC Browser App? The mobile version of myUMBC renders nicely and at least lets you navigate around menus. However, the full desktop version doesn't work. Of course, if all else fails there's also the nuclear option to make myUMBC Windows Phone compatible: https://wiki.umbc.edu/pages/viewpage.action?pageId=30544093