Update SNAP from 8.0.0 to latest version website unavailable

Hello,
There is no issue with the SNAP server.
However, there are some time intervals with high traffic, maybe you stumbled into such interval. You can retry.
Indeed, from 8.0.0 to 8.0.5 there are a lot of updates to download, but it should work.
The pool of IP addresses should not have a negative impact.