Get your Nightscout link. Make sure to include /
at the end.
Get the API secret, that’s just the password that you use to login into your Nightscout.
If you don’t remember your API secret and you are hosting your Nightscout on Heroku, then you can find it under Settings > Reveal Config Vars > API_SECRET
Add your CGM and select Nightscout, insert the link and the API secret that was retrieved before and allow sharing glucose and insulin data.