Here’s a small but important update: I removed and reconfigured the datalogger on the inverter, logged in again, and recreated the API setup. Everything is now working perfectly! Thank you @RM_de_Gruijter! 
Here’s a small but important update: I removed and reconfigured the datalogger on the inverter, logged in again, and recreated the API setup. Everything is now working perfectly! Thank you @RM_de_Gruijter!
