Two notes: the link on the eytv reporter page no longer works, but you only have to change the saturn in the url to www:
https://saturn.geniatech.eu/wp-content/uploads/2016/02/EyeTV-Reporter.dmg_.zip
And instead of physically staking something, you can use a tool that blocks network connections, the best known in this area is
https://www.obdev.at/products/littlesnitch/index.html?cmdf=littlesnitch
But there is also a free alternative (or donationware):
https://objective-see.org/products/lulu.html?cmdf=lulu+firewall+macos
Warm regards