Exactly the same with me. No matter how I try to access my lists, all I get is a blank white page with Geocaching.com in the search bar above.
The same with maps, but not the 'view map'.
I've done nothing different to the last 8/9 years; I've not changed any settings at all; It's must be a website issue.
Very frustrating, as without access to my lists, I have no way of adding caches to my GPS handset.
I've been trying for 3 days to get into my lists to update my gps, but have had the same issue, a blank white screen.
I've tried Apple Mac, iPad, iphone, & a Windows Laptop, but with the same result every time.
Very frustrating.