Patrons cannot access WordPress posts


My patrons have told me they’re unable to view this post, which I’ve set to be viewable by all supporters in the two upper tiers:

One of my patrons says:

“what I get is a screen with part of the above picture on the left side, and a note that says Unlock With Patreon, and when I click on that, all I get is a white screen. I notice at the bottom of the picture there are two blocks labeled Previous and Next. The Previous one is dimmed out, and when I click on the Next one, it takes me to your previous post, Great Empires of North America, Part 5. It seems the function of the blocks is reversed.”

Another patron says:

“After I press the button “unlock with Patreon,” it just says “strange continent” on top, and nothing more”

UPDATE: I’m now getting a “mismatching redirect URI” message.



I tried the unlock button from there, and i was informed by my browser of the below issue:

(index):1 Access to XMLHttpRequest at ' from origin ‘’ has been blocked by CORS policy: No ‘Access-Control-Allow-Origin’ header is present on the requested resource.

This means that you have an iframe or other setup which causes the link from the entire thing to appear as if from a different site, to put it simply.

That is why browsers are preventing the link to work.

If you really need to keep that setup, you must add “Access-Control-Allow-Origin” headers with necessary values to your website, host or service. You can contact your web host with this information and ask help as well.