Breaking my site

I have been using this plugin for quite some time and it has been working very effectively. I have been using it with autoptimize and all was well until I noticed low loading speed in google pagespeed insights so I just messed up everything while trying to optimize more. Now swift performance is breaking my site whenever I activate it. I have tried all the settings recommended on the internet by people. I have tried to deactivate and delete and reinstall but nothing is helping. Kindly help me out as I wish to continue using this plugin.

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