Screenshot.png Not displaying on admin


Staff member
I have installed a premium theme and changed the screenshot.png and uploaded it via ftp, upon looking at the admin panel it still display the old screenshot.png and the link it was linking was

http:// www. mysite .com/wp-content/themes/mytheme/screenshot.png

and if I directly go to the link


it shows my new screenshot but not showing on my admin panel, why does the admin panel detects the screenshot with www and if I look on my hosting file manager my theme has the new screenshot. I've tried to delete and reinstall wordpress from scratch including the theme but still doing the same thing. any thoughts?