I have released an update to the asl3-pi-appliance package that is used on the Raspberry Pi version of ASL3. This update resolves an issue with the firewall configuration that was causing operational issue between ASL3 and Echolink. If you are having Echolink issues with ASL3, please apply this update.
I also will note that software updates for all users should be applied on a routine basis so this may be good practice. 