I've never used a "shopping portal" before, so maybe I'm going about this all wrong. I'm in the market for a new Micosoft Surface device and decided to check out the Mileage Plus shopping site.
I found a "Shop these offers available at Microsoft Store" page on the
https://shopping.mileageplus.com site. When I clicked on a link on that page it leads me to sign in, but when I enter my MP number and password it responds
"Access Denied
You don't have permission to access "http://www.united.com/web/en-US/apps/sso/Login.aspx?" on this server.Reference #18.47acc117.1540834905.2576eb20"
So, what's the trick to access the site? Is there some pre-registration required?