plesk bin license --retrieve
result:
Updating Plesk license key: [2023-10-14 22:25:53.580] 24850:652af9141a320 ERR [panel] KeyUpdate Result code: 2 Network failure
[2023-10-14 22:25:53.580] 24850:652af9141a320 ERR [panel] KeyUpdate Result desc: cURL cannot communicate with license server
https://ka.plesk.com/xmlrpc (195.214.233.81): Couldn't connect to server(7)
cURL cannot communicate with license server
https://ka.plesk.com/xmlrpc (): Couldn't resolve host name(6)
[2023-10-14 22:25:53.581] 24850:652af9141a320 ERR [panel] KeyUpdate Result additional information: cURL verbose output:
* About to connect() to ka.plesk.com port 443 (#0)
* Trying 195.214.233.80...
* After 29998ms connect time, move on!
* Trying 195.214.233.82...
* After 14998ms connect time, move on!
* Trying 195.214.233.81...
* After 7498ms connect time, move on!
* Failed connect to ka.plesk.com:443; Operation now in progress
* Closing connection 0
cURL verbose output:
* Could not resolve host: ka.plesk.com; Unknown error
* Closing connection 1
Could not update the license. Make sure that connections to the license server ka.plesk.com on TCP port 443 are not blocked. To fix the issue, follow the instructions described in KB
https://support.plesk.com/hc/en-us/articles/12388137260695.
But the KB url leads to a non existing page