Our server is not able to verify signature for Google Wallet sometimes. Sometimes it works, sometimes verification failed.
We are using following guide - https://developer.android.com/google/play/billing/billing_integrate.html
and following Java implementation - https://github.com/anjlab/android-inapp-billing-v3/blob/master/library/src/main/java/com/anjlab/android/iab/v3/Security.java to verify signature on server side.
I noticed that there are 2 types of orders, for example - GPA.1391-1084-0175-28517, orders which starts from GPA are verified correctly.
Verification of orders which looks like - 4781656834035199745.4951372150438022 or 4557257650215229301.5495206017032115 or simply 8120126244668862748 are always failed
Moreover I can't see failed orders ids in Google Wallet Merchant Admin screen. There are a lot of such orders from different users created in different time, it does not look like a someone is trying to hack us
Any clue is highly appreciated.
