Interesting, did clearing the cache resolve the issue?

I also changed the cache expire time in the server, hopefully that will resolve it for other users

Seems ok now. I cleared cache first on both Firefox and the BB. BB mobile browser complains about the certificate the site is using, says certificate is not verified by a trusted source. Requires an exception to let it through but now displays fine.

    Sunspark BB mobile browser complains about the certificate the site is using, says certificate is not verified by a trusted source.

    I'm guessing BB is BlackBerry?
    This site uses Let's Encrypt certs, which Blackberry doesn't have by default - you'll have to download Let's Encrypt CA cert

    This may be the link for Let's Encrypt root cert - the ISRG Root X1 one
    https://letsencrypt.org/certificates/

    http://forums.crackberry.com/blackberry-10-os-f269/browser-rejects-lets-encrypt-certificate-1063800/
    https://supportforums.blackberry.com/t5/BlackBerry-10-Functions-and/Let-s-Encrypt-certificate-and-browser/m-p/3169561#M13153

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