I had to do some searching but was able to find the files that contained the api url. If you have portainer installed, it is easiest.
Launch console in container homeassistant and issue these commands
cd /usr/local/lib/python3.8/site-packages/aioambient
grep -nwli . -e 'dash2.ambientweather.net'
The only 2 files that I had with dash2 were websockets.py and api.py.
vi is the only editor installed in the container and it works well. Just replace dash2 with api and you should be good to go. My ambient station has been updating without fail now for a while.