encountered this problem recently. photoshop won't recognize that I have a subscription, and this is all creative cloud can do. every other adobe app I have works fine, just photoshop and cc.
Solved: Unable to reach Adobe servers. - Adobe Community - 9296520
Solved: Adobe Creative Cloud can't connect to server - Adobe Community - 10152117
Solved: We can't reach the Adobe servers - Adobe Community - 13322892