Can't update certificate using Project->Settings->Network - trial of Katalon Studio Enterprise has expired message

Hi,
While back I downloaded the Enterprise version and used it till it expired. Now I’ve the latest standard version. Now in the standard version, I can’t make any
updates on Project->Settings->Network because I’m getting an error, “Your trial of Katalon Studio Enterprise has expired. To continue using this feature, subscribe now.”
Has this feature been removed from the standard version or something happened when I uninstalled the Enterprise version and installed the standard version? Please advise.