Status
Ongoing. Awaiting further updates from Google.
The Issue
Google Play's payment services have been suspended in Russia, Crimea, DNR and LNR in compliance with applicable sanctions and trade compliance laws.
This means that while free apps such as Gems of War are still available to download and play, purchases are unable to be made via Google Play for any Gems of War players in these regions.
If you attempt to make a purchase in Gems of War via Google Play from one of these regions, you will receive an error message, your money will not be taken and the packs will not be added to your game account.
For the full details directly from Google Play, please see their help article here:
https://support.google.com/googleplay/answer/11959342?hl=en&ref_topic=3364264
Fixing the Issue
Ongoing. Awaiting further updates from Google.
You can follow for any updates on the Google Play Help pages here:
https://support.google.com/googleplay/answer/11959342?hl=en&ref_topic=3364264