1. If you visit adobe.com on macos with chrome (latest, tested with version 61 or 62) you will get redirected to "upgrade your internet explorer" page.
Clearly the browser identification is not working properly.
2. I had hard time figuring out where should I report problems with your website. I am doing it here because I gave up searching for more appropriate place. I hope this information will go up to whoever is responsible for the website support.
Can you try deleting your cookies and cache in Chrome? I just tested on a mac on Chrome 61 and was able to navigate to adobe.com OK. You may also want to try in incognito mode.
Let me know if this helps!