If there is an error code in the upper right hand of the screen, note it, then visit https://evsc.zerovatech.com/ and enter it into the Status Code search bar. Follow instructions to troubleshoot.
CPF50: Level 2 AC, 11.5kW, private use only. CP6000: Level 2 AC, 19.2kW, public or private use. Express Plus: Level 3 DCFC, up to 350kW, scalable for fast charging.