While it's definitely easiest to troubleshoot directly with your reader if he's able to join us here, there are a couple of things he can try:
- make sure third-party cookies are enabled, as timethief mentioned earlier. Visiting this page will tell him whether that's the case.
- to rule out a browser-specific issue, try a different browser.
- try clearing the browser cache.
- try turning off all browser extensions/add-ons or running it in safe mode. We can give him specific instructions if he posts here and tells us what browser and version he's using.
Please ask him to post in this thread and let us know what he's tried and what the results were. Thanks.