AFAIK the app is the same in both free and paid case. Which doesn't necessarily mean paid version gets the adds as well, but it's more likely the case. 🤷♂️
Same answer as to CXORA above. From my experience quality food is usually more expensive. You can also compare something healthy you cook vs something unhealthy you throw into microwave.
I wonder where it was installed from (flathub?) and whether it has something to do with the linux version. Since at least two of us don't see a superuser notification (turdas and me) but we are both on Fedora.
But does it allow login on machine and multi monitors like RDP does? These are two features I can't live without (at least the former).