Has anyone attempted to use the Chase card to buy or boost Avios on BA.com, but been frustrated by a fraud-alert rejection? I've tried both the app and the website, and Chase disallows the transaction for me every time.

EDIT: Chase swears it's not a Chase problem. Most likely Avios Group, which processes the Avios-purchase transactions, is set up to reject certain cards -- British Airways Visa cards among them, it seems.