Aleksandr, this is a brand new install?

It appears WX5 cannot access the activation server, try again as Claudio suggested. Disable ALL protection (AV/malware/firewall/vpn both 3rd party and windows security), restart and try again. Once successful, re-enable all and reboot and then access WX5, if anything offers to allow access, please do so and an exception will be created. NB a restart must be done after changing security and before running WX5 each time.

In your profile (top right this page) you will also find your license key/s, please copy and paste this and see if it works, there is also the option to download the full installable version should you wish. To activate you must have the correct email address & password (same as that used to access this forum and your profile).

If still unsuccessful do you have access to another internet connection (if running on a laptop, connect to your phones hot spot) to test?