Change Alexa integration IP Address

For some reason (as of recently) whenever I restart HA, I need to reconfigure my Alexa integration. The IP address is that of an older server that used to host HA (it’s the field in Alexa Media Player - Configuration titled "Url to access Home Assistant). How can I fix this permanently, so I don’t have to do this after every reboot?

How do I delete this integration, remove all settings, and start over?