since you tested this nodevfee program it's safe to use, I guess?
I'm always a bit scared about included keylogger and such things, claymore's miner also is closed source (and I always thought stuff on github is open source haha XD)

the readme is a bit puzzling. in the video they suggest to add the port in the batch file (along with the wallet address)
the moment I started nodevfee with the port added to the command line it tried to add the bat file to the autostart folder ... this didn't happen when I 1st started it without the port