Why free Happ keys die
A public line from a chat is someone else’s server. It can open today and go quiet tomorrow. This page does not list other people’s keys.
One server for everyone
The link gets copied into roundups. By evening hundreds of people share one pipe. The server is still “up”, but video and calls fall apart.
Nobody fixes it
A free node often lives until the hosting bill stops. Reality parameters change and the old line fails the handshake. There is no owner to write to.
That server also sees your traffic. A personal subscription is tied to an account: term, limit, and support.
What to use instead
Use your own link after payment. It is not published as a list, and the client refreshes it. HappSales plans are on the home page. Import steps are in the setup guide.