Wake-on-LAN not working... (until I reload)

So up until the latest UI5 update, my Wake-on-LAN plug-in worked perfectly.
Then after I updated to newer firmware, it stopped working readily.
I uninstalled the plug-in and reinstalled to make sure I had the latest.

So now, it works after clicking ‘Reload’ but most of the time I go to the plug in, click the respective wake button, and it says “Magic packet not sent”.

Any help here?