Social preview doesn't work

I have updated Social preview with a new image inside my public github repository’s settings.
And of course, the image’s size is 1280 x 640 px as recommended by github.
But hours have passed and it still hasn’t updated e.g. when I a link on some messenger.
It is working in my other repositories, but I can’t install any social preview in this one.
Any ideas?

Hi @romadanskiy :wave:
Welcome!

Are you saying that the social preview image in your repository settings is incorrect?
What do you see in your settings compared to what you want?
What happens when you refresh your browser?
Have you cleared the browser cache?