Articulate Mobile Player not working.

Hi there, I've been using the iPad Mobile Player for an online course for about a year now, but since the second last update nothing loads up, it either gives the home screen with library, favourites and help buttons, none of which work, or a completely black screen. I've recently updated again to v 1.76 and still the same.

How can I fix this? I've tried uninstalling it to no avail.