Yes! that solved it. Once I sent M552 S-1, M552 S0
I was able to successfully send the M587 command with the SSID and PW and receive an IP adress to connect to
To allow M303 H3 to run successfully, try increasing the D parameter in the M307 command for your chamber heater to 60. If you are using a config-override.g file, make sure that it doesn't include a M307 command that will override that.