There’s no plans a physical card will be provided and so far it’s worked well as it is, so unlikely it’ll ever become physical.
You can add and use the virtual card directly for this.
Transactions purchased via Flex are covered by Section 75 provided they meet the relevant criteria.
Anarchist
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4
One of which is that a virtual Flex card is used, so it wouldn’t apply to purchases made using a physical card, which what the OP is trying to achieve.
Section 75 only applies to transactions made with your virtual Flex card.