Hello @datagrc
This is not the expected behavior, and installing the plugin should not cause your website to go offline. Please submit a support request through your SiteGround User Area so our technical support team can review the case in detail and assist you further.
Best Regards,
Stefan Stefanov
Hi, thanks for the feedback. We’ve seen this reported on other sites and identified it as a compatibility conflict with an older version of the Plugin Check plugin.
The good news is that the conflict has been resolved in the latest version of that plugin.
Updating all your plugins should have your site running without issues. If you need any help, feel free to reach out to our support team. If the root cause has been addressed, we’d appreciate it if you’d consider revising your review.