Ensure that your physical keyboard is paired or connected with your iPad. Follow the instructions provided by the keyboard manufacturer, if necessary.
Can't type French and German accent characters with a physical keyboard
Get French and German accent characters when typing with a physical keyboard in a Photoshop document on your iPad.
French and German accent characters are not available when entering text in a Photoshop document's Type layer on your iPad. The issue occurs when you are typing with a physical keyboard connected to the iPad.
iPad with a connected physical keyboard
In your iPad settings, change the layout setting of your connected physical keyboard.
Go to Settings > General > Keyboard > Hardware Keyboard > [Desired language].
Change the language from Automatic to your desired language.