Error: This account cannot be used to activate Parallels RAS

Symptoms

RAS license can't be activated, error Error: This account cannot be used to activate Parallels RAS... is thrown:

licensing.log:
[I 56/00000001/T17A8/P1410/S0002] 18-05-21 20:14:22 - GET URL: https://ras.parallels.com/account/api/v1/sets/US_STATES, Headers: , Cookie: PAXLocale=en-US
[I 56/00000001/T17A8/P1410/S0002] 18-05-21 20:14:22 - GET try 1, Code: 403, Response: null
[I 56/00000001/T17A8/P1410/S0002] 18-05-21 20:14:22 - GET URL: https://ras.parallels.com/account/api/v1/sets/CA_STATES, Headers: , Cookie: PAXLocale=en-US
[I 56/00000001/T17A8/P1410/S0002] 18-05-21 20:14:22 - GET try 1, Code: 403, Response: null

If you try to open https://parallels.com, you get error 1006 Access denied:

Cause

Your subnet has been blocked on Cloudflare due to suspicious activity.

Resolution

Please reach out to Technical Support.

You may need to use another device connected to another subnet to submit a ticket.