Auto charge will not initiate charge or control Amps SUNGROW - TESLA

Sungrow SH5K-20 with 10Kwhr Sungrow batteries with mobile Tesla charger. Charge HQ App CHARGE NOW works and manual setting of Amps OK and communicating through to Tesla Model 3. STOP also works however AUTO will not initiate charge nor will it select Amps above 0. This Auto charging is the sole purpose of paying the subscription and engaging with Charge HQ. Would be ideal if home battery has priority to charge to 90% before excess solar is put into Car. Comment on App is " Solar generation is below Min Solar Generation setting" which is set at 0.1. I can set AMPs manually so the communication is working. Can you please check that I have settings appropriate to enable AUTO charging of AMPs available of excess solar generation for car charging? If clouds cover the sun I would anticipate AMPs to drop or charging to cease until sunny again then restart car charging. Is this possible with my setup?