ngrok assigning a new URL on each start

[cguthardt]

Whenever I start "ngrok http 4000" (as per the Configuration section of the Documentation), ngrok assigns a new URL in the form of [random_characters].ngrok.io.

This may work for the initial setup, but sooner or later the connection from Amazon to the GeeMusic server will fail due to the ngrok URL having changed.

[cguthardt]

To answer my own issue: This is how the ngrok free plan works. If you want a permanent URL you need to pay for ngrok. This info should definitely go into the documentation here, so people who don't want to pay don't waste their time with ngrok!