Espnow gateway using Cayenne Dashboard

Dear Cayenne Community experts

I found this very interesting project at Gitlab it´s a espnow gateway using 2 ESP8266

https://gitlab.com/MrDIYca/code-samples/-/blob/master/HubMin_SourceCode.zip

The MQTT library used is PubSubclient.h I tried to adapt source code to work with Cayenne with no luck, I don´t have software skills so If you coul help me with that
It will be great.

Thanks in advance