Equinox Gift Card $300 Reimbursement

Enrolled in Equinox+ digital membership for a 7-day free trial.

Amex shows my status as “enrolled.”

I made a $300 gift card purchase in-store at Equinox. However, the front desk said they couldn’t locate my membership ID.

The pending charge on my Amex account shows as “Equinox” but the details include a link “www.equinox.com/spa”

Now I’m wondering—how likely am I to receive the $300 reimbursement? Will this charge trigger the benefit with Amex?