Did you try this URL: https://softwareoffer.intel.com/Identity/Account/Login?ReturnUrl=%2FDashboard
I noticed in your title message that "software" was mis-spelled and am not sure if that was the same way it was typed when you went to the site, which would have caused an error. Can you try again?
The site was also down on Sunday and part of Monday, I think it was overloaded, but it is back up now.
Please be patient as I understand they have a very high volume right now. You can also submit issues here: https://softwareoffer.intel.com/SUPPORT
Support Community Manager