If the zeversolar or other solar app gives the solar power as a measument (W) (and usually they do) it’s possible to make triggers yourself with time based triggers, for example:
Solarpower is higher/lower than xxx
Set charging power to yyy.
Not very elegant approach, but works.
If I would use solar power I would measure the household inlet like Tim suggested and when the inlet power goes to production side the car charging is started or increased and other way around.
As Tim said there is some delay with the control of the Go-e charger, but not much. Personally I have flows that make kind of software electrical “protection” so that the household inlet is not overloaded or the supply cable is not overloaded. One cannot still rely on these software “protections” and the circuits must be protected with fuses, MCB’s and/or RCD’s.
I would say that you can do the control that you wanted with Homey and Go-e charger. Have to say that there are some learning to do if you dive into Homey and have no experience on home automation, but you can do it
Also bear in mind that like Tim said the amperage steps are 0A, 6A, 7A, 8A up to 32A. (Don’t go so high, your cabling propably cannot handle it) Same steps for one phase power are 0W, 1380W, 1610W, 1840W… up to 7360W. Same steps for three phase power are 0W, 4140W, 4830W, 5529W… up to 22080W.