The Syslog-ng license needs to be in this directory: /opt/syslog-ng/etc/
The license needs to be named license.txt
Step 1 - Rename license to license.txt
Step 2 - Move the new license.txt to the directory /opt/syslog-ng/etc/
Step 3 - Restart the syslog-ng service.
Run the following to confirm that the new limit is displayed: