You can install our site as a web app on your iOS device by utilizing the Add to Home Screen feature in Safari. Please see this thread for more details on this.
Note: This feature may not be available in some browsers.
I had the same issue with a faulty phase in my master charger. I ended up getting a getting a used RH Gen 2 OBC for 500 EUR and replaced it following the service manual and guide in this post "Replacing Onboard Charger Gen3 2017 MS75D...My Experience (With Photos)"
Wasn't too difficult and...