On my mobile version of my webflow site a gray link box appears to the bottom left, that links back to the Webflow main site. I'm not talking about the 'Built with Webflow' tab on the bottom right but rather an additional one that is an ugly box. It's not in any of my sections or styles and doesn't appear in my previews for mobile.
Screenshot on my Nexus 5 Google Chrome browser:
I have observed the gray box on Apple iPod Touch 5th Gen Safari browser.
Here is the website: kevseto.webflow.io
What can I do to remove this gray box?