It's going to need to resolve acu-link.com or one of its aliases (e.g. mybackyardweather.com) via DNS.
Usually the next thing it tries to do out-of-the-box is to download any firmware updates. I've no idea how long that might take over cellular.
After that you would start the registration process and associate the bridge with an account on mybackyardweather.com.
Usually the next thing it tries to do out-of-the-box is to download any firmware updates. I've no idea how long that might take over cellular.
After that you would start the registration process and associate the bridge with an account on mybackyardweather.com.