Sync unavailable for Product and Inventory in Shopify POS app: How to fix this error?

Can someone please help us investigate this case further?

The merchant is encountering an issue with product search through our Shopify POS app. Upon checking, we found that the product and inventory sync shows as “unavailable,” as shown in the photo below.

We had them update Shopify POS to the latest version, log out of Shopify POS on their iPad and log back in, and try connecting to a smartphone hotspot as their Wi-Fi. However, they continue to receive the “Sync unavailable” message.

We believe this is the reason they are unable to search for products in our app using the product SKU or barcode.

Related case: Bug with POS Product Search API? Large catalog, search works by title, but not SKU or barcode

Bumping this again. Anyone experienced this or have an idea for a workaround to fix it?

Does the user have all the required permissions? Both the staff member pin-ed into the device and the user who logged into POS