Boxed question marks instead of text on iPad Pro
I`m seeing text replaced by boxed question marks in different apps and mail. Most pages and apps work normally, but on some apps and some individual emails and web pages most text is replaced by boxed question marks. Some apps are totally useless because of this and some emails are unreadable.
The problem seemed to start spontaneously during a visit to a safe web site that I use daily using a secure connection. I`ve tried restarting the iPad and removing and reinstalling some apps. I have also removed the emoji keyboard. These didn`t help. Any suggestions?
iPad Pro, iPadOS 15