but you’ve exposed the token on a public forum…
I’m not really clear why the nodes need to send the auth token to the gateway in the first place. If the gateway has a connection to the Blynk server as you implied…
then I’m not sure why you don’t just use a single auth token on the gateway then simply write the data from different nodes to different groups of virtual pin datastreams.
Here’s one I posted recently…
It’s for the ESP32, but the follow-up post from @Blynk_Coeur explains the changes needed for an ESP8266.
Pete.