I have resynced iPad with my Mac. In iTunes I can see now version 1.7 (bought with my Apple ID).
When I try to update the app to version 3.1.0 in iTunes I am getting this error message:
This update is not available for this Apple ID either because it was bought by a different user or the item was refunded or cancelled.
I was given money back by Apple (I had issues with your app in the past, according to the stament the money was refunded, but I cannot find the email).
I will contact Apple directly.
Thanks for help.