By default Vallum runs in trial mode. You can run Vallum Trial and test all Vallum features for an unlimited time.
In trial mode Vallum displays a popup reminder every 4 hours. Filter is temporary stopped while the alert is displayed.
To disable the annoying popup alert please activate your Vallum license.
You can purchase a Vallum license at www.vallumfirewall.com
Vallum is also part of the Murus Pro Bundle available at www.murusfirewall.com