I operate this micro inverter in addition to a 6.6 kWp system with a 12 kWh battery. Using the very informative app, the output can be reduced to the permitted 600 W at any time. I am not aware that this throttling is not permitted. In the EU, 800 W feed-in has been permitted since last year.

I've been using the device for a long time, I haven't throttled it either, it's only rarely used over 600 W and I use all the power for my pool system, you don't have to ask for everything and Switzerland also operates wind power abroad

That is precisely the problem. The inverter can be limited to 600W by software. However, this is not authorised...

You can limit it to 600W!