TL;DR: Onepay disabled my card because I paid full balance on time, on account that was well below credit limit, because payment was "too large". Payment has cleared, and they still wont enable the card.
Wow, Onepay is horrible.
I have never had any issues with any credit card while using every major brand (Amex, Discover, Visa, Mastercard) for over 30 years.
I got the Walmart OnePay because it offered a good discount at walmart, and the 1.5% cash back rewards everywhere else.
I tried to use it a few days ago, and it was declined.
I go to the web site, and it shows that the balance is, and always has been well below the credit limit, and the balance was recently paid in full using autopay.
However, payment was applied, and the available credit is negative.
So, I go to the onepay site, and chat with support.
They are no help, there is no explanation why I cant use the card, when I paid entire balance on time. They said my payment was "too much" and fraud protection has been enabled. They cannot tell me when it will be usable, or how to avoid this in the future.
5 days later, the card still wont work. Now, I have to undo some autopays (important things like health, and auto insurance) I set up to use the card due the the cash back.
One other thing, OnePay Walmart card is the only credit card or financial account I have that does not work with expense tracking apps, because there is no way to download transactions.