Could the iThemes Security plugin in do this?

I’ve had my site up and running with the iThemes Security plugin installed for 18 months and have had no issues. However, in the past 24 yrs, I’ve suddenly lost all the formatting on my site — twice (ie my site basically looked like it had no theme installed — it lost the colors, borders, etc). This has happened without me making any changes whatsoever to my site or plugins.

Both times the ‘fix’ was to disable and then reactivate the iThemes plugin but I don’t understand why the plugin would be the culprit. I’ve submitted a support ticket to iThemes and am waiting for their response but thought someone in this forum might be able to shed some light on this issue.

I’ve also chatted with both HostGator and GoDaddy and they’re both saying it’s not an issue on their end causing the problem.

Has anyone experienced a complete loss of formatting and if so, what was the cause and how did you fix it?