Characters are not showing after deep link.

Hello. My app using a deep link feature.
When a user forgets the account password, they can restore it. We are sending a link(deep link) that opens the app with UI to change the password. but some of the characters are not displaying correctly. e.g 'c', '@', 'f'...
This happens only on few phones(that I could test),

Unity version - 2020.3.4
It is not Text Mesh Pro.

Also it is not font problem.
it is some kind of canvas problem