Lee,
After your first message above I spoke with a friend who has always had access. And I reference the site you just named and he said yes that stopped working for him as well. MBEPC.net was a good fallback for a while, as I have ordered numerous parts ever since COVID-19 started! Sometimes I just enjoy looking through it as well. The friend I just name recently purchased a 300 D Adenauer, So I went to help him look for parts as well. He’s been a tremendous help on working on my car. No regrets joining the 190 site, it’s always fun to study other models!