It will be technically a bit more challenging, but I don't think you need to use the lantern power monitor software with the device. The device seems to be built around two MCP3008 IC's, which are basic 8 channel analog to digital converters. The values from these can be read and processed (like, sent to home assistant) using a python script on the raspberry. This is the kind of minimal programming effort someone with no experience could do using chatgpt.