My site (weaselbandit.com) is down. It went down after installing the Printify plugin.

I've tried installing the Filezilla and the WinSCP software to log in and disable the plugin that way, but neither of them will connect to the site.

I've tried searching everywhere for a solution but I can't find anything. Please help me.

PS. I only have intermediate knowledge about this stuff so I might need it explained, like I'm an idiot.