It is impossible to enter the license server (I bought a license)

When I go to the launcher, he writes "to play offline", although there is an Internet connection.
I rebooted the computer, it did not help. When I connect to the license server (HYPIXEL and other popular servers), he writes: "Authentication servers are currently unavailable for maintenance." Previously, such problems did not arise. This problem lasts for a week
Thank you in advance!