12.5 ER360 could not make an offline license. 12.5.1 and later versions introduces this capability.
You may have a firewall blocking the license server on IP address: 188.8.131.52 (my.nalpeiron.com)
Or your PC may not have an internet connection
The symptom looks like the following (Not Active)
In these cases it is better to generate the host file and use an offline license for ER360
Example of where the license server is blocked, initialization screen responds "Not Active"