If your ring will not keep charge, it will blink red-green-blue (i.e., turn on) every time the micro USB is plugged in. We've noticed this happening to several rings due to a misconfiguration of the battery wires.
If this is happening to your ring, a potential quick fix is to simply reassemble the ring. This often puts the battery wires in a different, correct configuration. Please follow this video if you'd like to try reassembling your ring.
If this doesn't fix your ring or you wouldn't like to try it out, please email firstname.lastname@example.org and we will give you instructions to ship back your ring. We'll then send you a new ring. Otherwise, you may request a refund.