Web Link Error in Excel

I'm not sure if this is a problem with Excel, Edge, or the website in question, but when I add a web link to an excel cell, an "http://" is added to the beginning of the link, and it doesn't appear it can be removed when editing the link. Edge will not open the page with the "http://" added. The link in question is "www.bestbuy.accountonline.com", if anyone cares to try it. Edge opens that link fine but not with the "http://" that Excel insists on adding. Any thoughts? Thanks for your help.