When you plug into DC Fast Charger (CCS) if the light stays white, it has not completed the "handshake" with the 2 devices. Usually this means the little locking pin at the top of the port has not engaged and for many people, simply lifting up a bit on the handle while plugging in solves this problem. If it does not solve the problem, look at the top of the port to see if the locking pin is even coming out to lock the DC Fast Charger handle to car. These can fail. When they do, you can't use a DC Fast Charger until it is fixed (usually means replacing the little module).
You can also check to see if the locking pin is working by using your wall charger at home. Plug the handle in, then LOCK the car with the FOB while watching at the top of the charging port to see if the little locking pin comes out. The locking pin is not used when charging from L1 or L2 charging except to lock the handle to the port when you lock the car.