I have been denied access to Costco website

What was the specific error message - do you recall?

Did you get as far as a username and password, and a password reset will help?

If the webpage would not load, that maybe a privacy setting. Check your browser settings. Some sites don't allow private browsing, or rely on cross tracking to work, and some want some kind of ability to verify your location.

Please read If Safari doesn't open a page or work as expected on your Mac - Apple Support.

Me too!!

why can't i log into the costco site on my mac pro laptop? i can't log into the site because my access was denied. i've tried to use safari to but get the same denial message?