I don’t know if it’s the same for everybody, but maybe when it happens next somebody can check this out as a possible solution to adding things to cart and they don’t want to be added?
I tried to add the Bracer to my cart yesterday. I clicked on it twice and it did not do it. I was glancing at the top right corner, to make sure I wasn’t logged out, and it had another name listed. When I refreshed the page and my own name was there again it added just fine. Might be that when somebody else’s name pops up into your account while your trying to add that it doesn’t want to let you do it. Might be worth looking into?