I get the following error every time I try to use Quickprint. I am using the latest versions of Chrome and Safari and as far as I know, I have no security plug-ins that I’ve added to my site (all of the plug-ins, except for Print My Blog, have been added by WP).

“whyweroam.wpcomstaging.com says. There seems to be an error initializing. Please verify you are using an up-to-date web browser.Also check the WP REST API isn’t disabled by a security plugin.Feel free to contact Print My Blog support.”

The page I need help with: [log in to see the link]