Even if you don't store that information, and even if it is not really useful, you should maybe note somewhere that all the "leak" information is sent to Plumbr servers.
The info is sent when you click the Decrypt button, and there is an explanation right above the button:
"You are running Plumbr with evaluation license, which means that all Plumbr reports need to be submitted to our server to see full details. /---/"
Even if you don't store that information, and even if it is not really useful, you should maybe note somewhere that all the "leak" information is sent to Plumbr servers.