HomeKit - Could not add home

This evening I received a notification on my iphone that someone (not me) was trying to connect to my icloud account. Although I have two step verification I denied and then went straight to update my password.

After re signing in on my iPhone, my home app now just wont load.

I receive the welcome to home message, click Continue and then get a message: Could not add home "My Home" A home with a similar name already exists. Try entering a different name.

The only the option OK.

Click OK - just returned to the Welcome to Home Screen.

I have tried to disconnect my iCloud account to the device and restart it, nothing seems to change. I'm just stuck in this ever long loop.

I don't seem to be able to find any advice whatsoever anywhere, I would be grateful for any advice,

Thank you