Welcome back, st3ns0n91.

Upon checking, I've seen that you have an open case under your account. That said, I suggest contacting our QuickBooks Point of Sale Support Team. They're equipped with tools to securely look into your account and further check the main cause why payments account is closed with no explanation. 

Please click this link to reach out to our support: Contact Point of Sale Support.

In case you have future questions about POS, check out this guide to learn more: QuickBooks Desktop Point of Sale User Guide.

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Anything else you need help with can be answered here in the Community. Just let me know and I'd be happy to assist. Have a good one.