Hey Bok,

LHC@home link points to the legacy Sixtrack page, which is still linked account-wise...

However it notes it is the legacy page and tells you to visit:
http://cern.ch/lhcathome


However, I think:
https://lhcathome.cern.ch/lhcathome/

is probably a better page for what most users are trying to get to... especially as the first page doesn't have a way to get to your account. (There's a CERN login which still isn't connected to one's BOINC registration.)