After upgrading from v3 to v4 Greek characters displayed as?

[valentionas]

Hello

I just did the upgrade from 3.x to latest version 4.x today and all was ok without any issues during the upgrade.

The only issue is that after the upgrade the Greek letters on titles/posts etc looks as questionmarks ????

It maybe be something related to a configuration .....

Can you please check it and help me with that?
 

Edited March 7, 2021 by valentionas

[bfarber]

This sounds like a character set encoding issue. I would encourage you to submit a support ticket so our staff can assist and take a look at what might have happened.