To link the automationbridge to your iOS Home App, make sure that you have enabled at least one device via the automationbridge home page before proceeding, then just follow the steps below.
Step 1 - Navigate to the iOS HomeKit page.
Here you will find the QR code and Homekit code to add the bridge to your iOS Home app.
Step 2 - Open the iOS Home App on your iPhone or iPad, and then press the plus icon at the top right.
Step 3 - Choose Add Accessory 
Step 4 - Now you can scan the QR code using the Home app.
Note : You will get a warning that this is an Uncertified Accessory, just press Add Anyway to continue
Continue thru the setup process by pressing the Next button, at the top right, assigning devices to rooms as required.
Once this is complete, you will find your enabled devices on the Home app, and these can now be controlled by the App & Siri.
Please Note : Due to recent changes with the Apple HomeKit ecosystem, the use of a Hub is required for full functionality such as an Apple TV (preferred) or HomePod.