When viewing a product in the extension or web app, SAS may show a set of offers that's different compared with the mobile app; for example, a product in the US marketplace shows FBA and FBM sellers for web and extension, whilst the mobile version only shows FBM sellers.
The reason for this could be the Amazon shipping address not being be set to US marketplace, in which case the customer needs to click the Amazon icon and make sure the delivery address is set to the US. Customers who are not signed into Amazon via the mobile app may prevent SAS from gathering certain data.