R/ am I user error?

Am attempting to buy coffee for Alexander Petrov for the article he authored that led me to this glorious site. As I cannot currently commit to a monthly donation, financial uncertainty being what it is. However I’m finding the button unclickable. Is this tragic user error? Considering I am a 30ish something adult lured here by an article detailing programming basics explanation for the comprehension of a 6yr old, it is the likeliest cause of the problem.

what button are you talking about?
what page have you visited to try to make the donation?