Why can't I access the theme customization page?

Hi, I am unable to access the theme customisation page.

It comes to an empty page whenever I want to edit my theme.

Please assist.

Hi,** @Valerie1991 **.

Have you tried to access the Theme Editor of your store on an incognito mode or private browser window? When using an incognito mode, if you’re still experiencing the same issues, you can check if you’ve disabled your browser extensions, as these can also impact on your browser performance. You can also ensure that the web browser you’re using is up to date on the latest version. If the issues still persist, you can also try to access your store’s Theme Editor from another device altogether, just so that we can rule out any device, browser, or caching issues.

If you’re able to successfully access the Theme Editor using one of the methods above, chances are you’d need to clear your browser’s cookies and cache on your usual device or browser. However if all of those still don’t work, you can try another internet connection, for example by switching to a cellular network on a phone rather than using wifi.