Installing TeamViewer QS on iOS devices

I am attempting to set up TeamViewer QS on an iPhone with iOS version 16.7.10

and I am following the instructions that you have on the TeamViewer website. Step 3 says to "Go to Control Center Customize Controls" in the Settings app. There is no Customize Controls in the Settings app on the iPhone nor was I able to find it on my iPhone or iPad, both of which are up to date with the iOS version and are less than 2 years old for each device. What am I missing? I have attached a screenshot of my iOS device screen at this point in the instructions and there is no option for "Customize Controls".