I'm having a similar problem. Neither EmonCMS or MQTT can publish anything. Anyone have any thoughts? I fresh flashed both the wifi firmware and the openevse firmware.
The most common issue with EmonCMS is not matching the node on the server/WiFi Client. If EmonCMS is set to "0" than the client also needs to be set to "0".
Yes and 4.8.0 on the openevse board.
Lets work on EmonCMS first. Can you check that:
server is set to:
Node matches the setting on the server
Key matches the server
SSL Fingerprint is blank.
I will check the server side.
Yes and I'm using the Write API Key located under the My Account page.
Can you try the Device API key on the device page.?