Hi there, jiminok. 

Yes, the customer agent is correct. QuickBooks Desktop Point of Sale 19.0 was discontinued on October 3, 2023. The following Payments and Connected Services have also been discontinued:

• QuickBooks Point of Sale Payments
• QuickBooks Point of Sale Gift Card Service
• Mobile Sync
• Intuit Store Exchange
• Webgility E-commerce integration
• Support plans including live support (phone, email, chat)
• Vendor Lookup Service

You can continue to use QuickBooks Desktop Point of Sale 19.0 without these services after October 3, 2023. However, discontinued products may no longer receive the latest critical security patches and updates, making your system vulnerable to security threats. To learn more about the QuickBooks Desktop POS service discontinuation policy, please refer to the article linked here: QuickBooks Desktop Point of Sale discontinuation.

Please don't hesitate to post again if you need further clarification about the product discontinuation. I'm always here to help you out. Have a great day!