Same here. I tried one hour ago and could get one and now is all "Get Access"
Bad Springer :(
I'm in UK as well and everything was working just fine up until ~15 minutes ago.
This may be something decided depending on your geographic position where author's or editor's rights are differently being applied then.. From where I am I can get a "Download Book" button.
Not sure about that, just checked a link from a book that I had downloaded previously (this morning) and the download option was no longer there.
Same here (Germany), saw this in the morning, wanted to download after lunch, doesn't work anymore.