I have released an initial version of the iopool node server for PG3 (v3.0.1) that interfaces with iopool public API to allow IoX to access iopool EcO pool monitors. Installation instructions, release notes, and version history can be found here: https://github.com/Goose66/NSDocs/blob/main/iopool-pg3.md.

There is a 1-month trial period and then the node server is $10.95 for perpetual license.

While the company has said there was a one request per second limit on accessing the API, it appears that the EcO devices only update the web service once every 15 minutes, so no need for a frequent polling interval (default short poll is 60 seconds; long poll not used). There is no "connected" status, but there is a timer since the last valid measurement was retrieved, so that can be monitored to indicate a problem with the EcO device, the cloud service, the API, or your network connection.

A new version (v3.1.2) has been released with a couple of new features, including the ability to specify a temperature unit ("F" or "C") for reporting temperature. Release notes for the new version can be found here: https://github.com/Goose66/NSDocs/blob/main/iopool-pg3.md.