Problem - Self-Use Mode always automatically toggles back to on

[japers]

Thanks Pho3niX90 for a great integration!

I have a very off problem since moving over from the Solax integration:

Within 60 seconds of toggling "Self Use Mode" off (as per below), it toggles back to on (not caused by any other automation). The result being that the battery stops charging.

This was not an issue with the Solax integration. I therefore think I must be missing something?