Unable to use SPG to buy Vanilla Reloads @ CVS

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Hello!
I went to 2 different CVS this morning and both stated that the transaction needed an "alternate payment method". I was able to buy a Vanilla Reload this Monday with my Chase Sapphire.

Am I missing something? Are AMEX SPGs not allowed for gift cards?
Thanks
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Welcome to Flyertalk.

I suggest you review this thread, which hosts most of the current discussion of buying Vanilla reload cards at various merchants with various forms of payment:

http://www.flyertalk.com/forum/miles...t-card-89.html