The best bet would be to contact Store Support and inform them of the issue; this is the 3rd app in recent weeks to have the same problem...Store Support tend to fix things when a customer complains...

It isn't the developer's fault but Store's as they updated the version but didn't change the version number in the control file hence a conflict occurs and installation fails...

MeeGoal had this issue since the past 2 weeks and only solved 2 days ago as did PopFlix...