Shopify POS Hong Kong

So I've worked with several clients using Shopify & Shopify POS and have been getting mixed answers from Shopify customer service.

Is the Shopify POS only compatible with Stripe? I have been told it will also work with gateways such as by Shopify customer service. But a few of my clients have also been told it will only work with Shopify Payments (aka stripe). I have created a test account myself which did allow me to plug in a gateway.

Shopify POS loyalty app

Shopify POS retail

Shopify POS MacBook

Shopify POS wont open

Shopify POS login