First time you download LongoMatch, you will install LongoMatch PRO trial during 15 days. After this time, you will be asked to validate your license in order to keep using LongoMatch. 

To activate your license, login in LongoMatch desktop app using the same email and password you used to register:

In case you forgot your password, please click on Forgot your password? to restore it.

Once logged in, select the desired license from the dropdown menu: