So you need to update your connection to your Google Business Profile account. It's easy; just follow the steps below;
1. Make sure the website you want to update is active in your account
2. Click on 'Local' and then 'Listing Manager';
3. Then click on the 'settings' cog on the far right of the screen;
4. Click on 'Remove Location'. This will then disconnect your Google Business Profile Account from the platform.