Site Kit – Verify site ownership error

Hi

I am trying to set up Site Kit and I am getting this error :

The necessary verification token could not be found on your site. This may be related to your site using a page caching plugin. Please flush your home page cache and then try again.

I have tried deactivating caching plugins like wp rocket and anti spam, making sure the Site Kit plugin is up to date and still no luck.

Please advise

Adele