Turn server not responding to allocation requests

The turn server used by the examples - mmt-turn.verkstad.net:443 - doesn't seem to be active anymore

Start by locating where the example applications configure the TURN server and search for mmt-turn.verkstad.net:443. Verify the configured endpoint and test an example's allocation request; done means the examples use a responding TURN service or the issue is documented with the unavailable dependency identified.

Written by the indexing model from the issue text.