When I set up my Fronius inverters, I did connect them to Ethernet, but disabled any cloud features and set up a simple script that fetches the stats I'm intere

When I set up my Fronius inverters, I did connect them to Ethernet, but disabled any cloud features and set up a simple script that fetches the stats I'm interested in and stores them to a local influx database. I didn't go as far as isolating them from internet/rest of my network- I am mainly concerned about them losing my data/going bankrupt/trying to charge for "cloud" features.