Android Expert to help Fix app problems

I need someone who is extremely familiar with Android Apps. I have an Android app that is a video dictionary. There are just over 300 videos. They are arranges in alphabetical order as well as categories. There is also a quiz game included in the app that has the option to select the number of videos per quiz as well as the number of answers from 2, 3 or 4. The app is already made and uploaded but users have been having huge trouble with it. I'm wondering if there is someone who is VERY familiar with the Android market that can look at the app and troubleshoot the issues. I would need the full version as well as the lite version fixed. Here is the LITE version of the app [login to view URL] Please have a look and let me know if you'd be able to help. I have the same app on the iphone and have zero problems with it. Please let me know if you have any questions about the app to help you bid correctly on the app!