Thanks for getting back in here, @PROPNewHope. Allow me to chime in and clarify things for you. 

When the POS version retires, all internet-related functions will also be disabled. 

It's true that around October, POS 19 customers will no longer have access to critical security patch updates to help protect them from cyber-attacks and data theft. In addition to that, payment and connected services will also be discontinued.

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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Let me know if you have more questions about the features and update in Point of Sale. I'd be happy to assist. Have a good one.