Good news! The Windows Phone app version 0.5.4.0 is up and running again. Thanks to those who pulled the levers and pushed the buttons to make it happen!
issues with the chess.com app

Hello sir ...I have been. Trying to pay for Google play balance but it shows developer error 5.....please solve this
I don't believe you an pay with a play balance since memberships are subscriptions. You have to have a payment method linked to your Play account.
You can ask support to be sure though: https://support.chess.com/collection/343-contact-us
Great thoughts, Bio -- especially with your NFL East analogy! I'm not an IT guy, but it seems that in due course the Win10 & beyond platform should find a viable, global (not just US) market.