FRSarker

The delay (or flash) is coming because of caching plugin.

In your caching plugin, try to exclude DarkMySite’s inline CSS, JS and things will be fixed.

Below class names are used in DarkMySite’s inline CSS and JS:

darkmysite_inline_css
darkmysite_inline_js

And the CSS & JavaScript filename used for the process is:

/wp-content/plugins/darkmysite/assets/css/client_main.css
/wp-content/plugins/darkmysite/assets/js/client_main.js

In your caching plugin, you must have ways to exclude delay loading on this files and inline class.

Yes of course. Our developer team is already testing a future update which should be live at the 1st week of June 2023.

Thank You for letting us know the issue you are facing.

As per the rules of WordPress Forum, we are not allowed to discuss anything related to the pro plugin here. As you have sent us email using our dedicated contact page, we just replied you there.

Just for basic information, the issue is related to caching plugin and if you just check again by disabling the caching plugin for testing, it will be more helpful to us to find the exact issue.

Our dedicated developer will personally assists you via email.