It won't let me restore my account purchase – Plann: Preview for Instagram Review

I had to delete the app and reinstall in an attempt to resolve the black screen issue you guys were having. Now that you released the update, I no longer see the black screen. However, when I click restore at the bottom left corner, it doesn't restore my original Plann account which I had purchased months ago before you rolled out the monthly app charges. Please help!
Review by ferocious tenderpie on Plann: Preview for Instagram.