I have an Late-2014 iMac running macOS Catalina 10.15.7. My keyboard is danish. I have in the Adobe Creative Cloud App under "Apps" chosen the default language of installation to be "English (International)" I have just installed Photoshop 22.3.0. When I in Photoshop write any text (with the text tool or when saving a document) I can not write an underscore (_). Instead an queation mark appears (?). Other characters are also wrong. I do not have this problem in Illustrator 25.2.1 or any other program on my Mac. What is wrong?
Photoshop-proferences: Interface / Presentation / UI Language / "English: international" (The only choise)
I would think the your keyboard would be a Mac system devices. Have you configured your mac OS to use your danish keyboard. Photoshop would use your Mac keyboard character support. And your Photoshop Language setting to generate text for the language you use. Mac device driver would be generate the characters for keyboard key presses.