I recently had about $40 of Play Store credit that was inaccessible to me for weeks. Google support just kept telling me “Okay, wait 24 hours and it should be good now.”

FINALLY someone got it straightened out, but during the course of it, I had to explain to support what Stadia was and why I didn’t have a gift card number.

“Guess I’ll have to end the Google Play credits program 🤷‍♀️” - Google, probably

So the TLDR seems to be:

• Some users have reported issues using their Play balance
• Google has not yet responded
• Use another payment method as those are still fine

live by the google, die by the google