If at all possible, we could rebuild this integration to use the new API. There are reports of login failures, but that's probably related to the latest HA 117 build.
The new API is documented (in the Solax Cloud portal) and uses a generated token instead of username/password.
User can get a specific range of information through the granted tokenID. Please
obtain your tokenID on the API page of Solaxcloud for free.
The tokenID can be used to obtain real-time data of your inverter system. The
obtain frequency need to be lower than 10 times/min and 10,000 times/day.
If at all possible, we could rebuild this integration to use the new API. There are reports of login failures, but that's probably related to the latest HA 117 build.
The new API is documented (in the Solax Cloud portal) and uses a generated token instead of username/password.