This is called the FOUC phenomenon, and it happens when critical assets are delayed from the page load. It usually happens a minify/cache plugin is used and it’s accidentally configured to asynchronously load all javascrip and stylesheets. In case you use anything like that, make sure to turn off async asset loading – those I only recommend using if you know how to extract critical CSS, and that’s not easy to do.
If that does not work or you don’t use anything like that, then can you please change these two options: https://i.imgur.com/d7razwI.png
These should resolve any output buffer related issues causing the FOUC.
Hi. Thanks for this detailed reply. Unfortunately I do not have the skills to do this, nor do I have anyone who can do this for me without charge. I now have another search plug which works ok. Can you refund me for your plug which has been causing such a problem?
You only need to switch this option, and it will likely resolve the problem. The issue is unfortuantely not caused by our plugin as I mentioned in my previous reply, however that option may prevent the incorrect stylesheet loading caused by your cache plugin or CDN.
You can of course open a refund request, if you purchased within 7 days it will surely be approved.