Bought Milk Settlement review: Can't use card issued to me

I have tried 3 times two different stores to use this credit card.

9-29-22 So, I called got a very pleasant young man, that gave me step-by-step directions on how to register my card and then be able to use it. hah

10-6-22 I call again but now it is all automated, no person. You only go in circles.

It very specifically tells you to go to the website on the back of your card--what card--electronic. It would take 2 seconds to give that website, but nooo.