I was trying to activate the 'Ultimate Coming Soon' plugin, as I am still developing my website, and after uploading a photo for this page I saved changes and logged out of WordPress to see if the page could be seen by those visiting the site. Instead, I came across a blank page and I can no longer log into the website. I searched some online help guides which suggested downloading FileZilla, but I don't know how to use it. I have no coding experience and am very stuck! Would really welcome any help so I can get back to working on my website.