To access the PC, you will need to open the top of the kiosk. This is how to do that:
Disable the alarm for your outdoor kiosk by going into the Terminal Settings in your Appointment Manager.
The keyhole is behind a cover. Using the special screwdriver supplied with your kiosk, remove these screws to expose the keyhole. (keep the screws and cover somewhere safe)
There is a rubber weatherproof seal around this door which can make it difficult to turn the key. Press the door closed to make it easier to turn the key (this can be a 2-person job)
When the door is open, you will see the PC. There are several spare USB ports available to plug in a keyboard.
On your keyboard, hold down Control + Escape to bring up this menu, then use the arrows on your keyboard to go to Internet, then TeamViewer:
This may bring up your TeamViewer credentials, or the TeamViewer window may be hidden behind the main Check In window.
If you cannot see the TeamViewer credentials, use Alt + Tab to bring up this:
Press Alt+Tab on your keyboard to select the TeamViewer window:
If you still see this white page, you can minimise this using the touchscreen:
The TeamViewer credentials will be visible now: