Warm greetings, rajasekhar. I got the information you need about why you encountered an error message while trying to connect to an application.
Before anything else, please know that when you encounter an error message, "This app no longer meets our guidelines and standards. It's no longer available, and you can't connect to it. Reach out to the app developer for support QuickBooks issue." It usually means that the application you tried to connect no longer meets publishing requirements and guidelines as part of Intuit's Developer Terms of Service, or the application developer still needs to complete a self-assessed questionnaire to determine if it meets. The application will only be granted permission to establish new connections when it fulfills all of Intuit's conditions.
If you're interested in knowing more about the requirements for developers, you can contact our payments support.
Meanwhile, I recommend you coordinate directly with the app developer to implement the requirements in Intuit so you can connect.
On the other hand, I'll be adding these articles to help you manage your QuickBooks Payments:
You can tap the reply button below for further clarification regarding connecting QuickBooks Merchant Service to your e-commerce portal. I'm always here to help you out, rajasekhar.