The first thing I would do is drive the car to a public L2 charger and try it there. Even though it won’t be as fast as your home setup, if it’s 24A that’s 5.7 kW (kilowatts not kilowatt-hours). That could tell you if the problem is or isn’t the car.

 

kilowatts not kilowatt-hours

One of these days, I need to learn about the interrelationship of volts, watts, amps, kW, kW hours and so on. The consequence of a liberal arts education

 

In practical terms: a million volts may or may not kill you — it depends on the amps. Likewise 50 amps may or may not kill you — it depends on the voltage.

 

I have had this happen a few times over the years. 100% of the time it was because the charger was not fully seated. Unplug + replug (carefully) = full power. YMMV.

 

And check the settings in your ChargePoint app, on the home tab. You can go there and dial down the charge rate… maybe you did that by accident?

 

Also check to see if somehow you accidentally checked "reduce AC charging current" in the car.

If you have a Home location set up and it has that checked, and you try a charger away from home that doesn't have a location set, the default might be set to not checked. So be careful about interpreting the "other charger works" scenario.