Hi,
For what you have explain about your issue I understand that your site is down after you tried to install the free tier wordpress following a youtube guide [1].
It seem, for what you have explained, that it is a specific issue that is affecting on your project, like one missed step of the guide or one configuration that maybe are interfering with your actual project components, and not a global issue.
For cases like yours, where to go forward with the investigation of the issue it has to be done with internal tools to identify it inside the project, are the cases that are related to the Support Team, because they had access to more information and tools, letting them being able to help for more individually issues, so I suggest you could open a case with them.
From your side, I would suggest you to check the logs about the components involved to be able to identify the possible errors and where those errors are occurring, it will help you to be more certain about what is happening in your site, or you could also check that every component as instances are working as always.
I hope your issue is solved as soon as possible.
Regards,
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