You have both smartphone and PC connected at the same network. But no connction between the two.
1st case
A possible reason is a firewall on the smartphone, .i.g. ReThink. In this case you should exclude KDE connect from firewall.
2nd case
If you have a KDE connect connection, but you cannot browse your decive from your PC, you could have some previous corrupt installation/config on your PC.
Than you can try with:
- killall -9 kdeconnectd kdeconnect-app kdeconnect-indicator
- then no output for: "pgrep -la kdeconnect"
- rm -rf ~/.config/kdeconnect ~/.cache/kdeconnect ~/.local/share/kdeconnect
and then
- systemctl --user daemon-reload
