That's not a valid license key.

[Никита Васильев]

Good day! Install Jira on your server, the installer says that the license key is not suitable.

[Bastian Stehmann]

Hi @Никита Васильев,

please check this points

• Did you copy the whole license key in?
• Did you use the license key for the product you installed?
• Is your maintenance still active? Otherwise you may only install the latest version that was released within your maintenace period.