Congrats to Pietro Majer, who recently got silver fa.functional-analysis badge. Other two users with this badge are Nik Weaver and Bill Johnson - in fact, Bill Johnson has gold fa.functional-analysis badge. mathoverflow.net/tags/fa.functional-analysis/topusers

There was a post asking for the paper Helmut Hamm: Zum Homotopietyp Steinscher Räume here: mathoverflow.net/questions/291965/… (now deleted)

The link given in that eudml entry indeed does not work: gdz.sub.uni-goettingen.de/resolve?PID=GDZPPN002200082

This link does work for me: digizeitschriften.de/dms/img/?PID=GDZPPN002200082

So does this link: digizeitschriften.de/dms/resolveppn/?PID=GDZPPN002200082

Maybe it's worth checking whether it is just a temporary problem - in if the link still does not work after some time, probably GDZ or EUDML should be notified.

The above comment and also some comments in Homotopy Theory chatroom suggest that some users observe different behavior than usually.

To be honest, I am no longer sure - maybe there were indeed some changes.

But I am pretty sure that the rooms were displayed also in the past only on some questions and only sometimes, not always.

On other sites, community were sometimes displayed instead. (But they are not shown on MO.)