Just download and install the updated app. It should work fine as long as you are on Version 6.0 or higher.
Im having some problems to progress the most far I have reached is the date with Twilight at the park and with rainbow in her home and collected some objects for the mirror the only object I have collected for the glim bar is the out date sider
There is still more to do with Purple.
You need to talk to Zekoro and find the Morphus Mycenum.
