Removing WP Optimize destroys layout of site

I have disabled wp Optimise but this destroyed the layout of the site.

I also deleted it and removed the cache of the plugin but the issue remained.

When I reactivated WP Optimnise the website loaded as normal and the layout was restored. There was no problem using other cache plugins before I started using WPO but now installing another cache plugin does not restore the layout – it is only when I reinstall WPO that the layout is restored.

Is there a solution?

Thanks.

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