I might have a suggestion if you haven't fixed it yet. I have the Ender 6 (I know its not the CR6-SE).
I had the same problem I don't read Chinese and don't plan to learn.
i looked on https://www.creality.com/download under CR Series and found Creality cr-6 se local language upgrade firmware.7z Dated 03/12/2020. when you unzip it you should find DWIN_SET.zip. unzip that and put the contents on your SD Card.
with power off. take apart you screen. and upgrade the screen firmware.
hope this helps