Doesn’t work well for https sites

AO uses WordPress core site_url() to get the base URL. So what are your WordPress Address and Site Address in “settings -> general”?

These URLs are both HTTPS.

It’s hosting on WPengine – Could that play a part?

I wouldn’t think it would cause something like this.

I’ve tried uninstalling and reinstalling, but same issue.

there are hundreds of sites with AO on WPengine, so that cannot be the reason.

no idea what is causing this I’m afraid, but what you can do is add your CDN (with https://) in the CDN-field in AO?

Yes, I’ve added the CDN in, still doesn’t help.

well, if you added the CDN URL with https:// and the AO’ed files are still loaded over https://, then there is something _very_ odd happening. I think now is the time I’ll have to ask you for your site’s URL ??

It’s https://www.disabilityaccessconsultants.com.au/

The JS / CSS part of the plugin is off now but the error message related to it loading the css / js assets version over http version of the site.

near impossible to guess what is going on I’m afraid, esp. when not able to see it broken ??

But I do understand you don’t want to leave your site broken, so what might be a solution is to activate AO briefly, then run a test on https://webpagetest.org/ and post the result-URL here so I can review?

OK great:
https://webpagetest.org/result/180718_86_93be45f336fda385a9dbcf862aeb9fa8/

Console errors:

Mixed Content: The page at 'https://www.disabilityaccessconsultants.com.au/' was loaded over HTTPS, but requested an insecure stylesheet 'https://www.disabilityaccessconsultants.com.au/wp-content/cache/autoptimize/css/autoptimize_9fec2bb5fe6b5444bc731fb57119e060.css'. This request has been blocked; the content must be served over HTTPS.
(index):1 Mixed Content: The page at 'https://www.disabilityaccessconsultants.com.au/' was loaded over HTTPS, but requested an insecure script 'https://www.disabilityaccessconsultants.com.au/wp-content/cache/autoptimize/js/autoptimize_064d1e7e3e5b0b19573db889172c2680.js'. This request has been blocked; the content must be served over HTTPS.
(index):1 Mixed Content: The page at 'https://www.disabilityaccessconsultants.com.au/' was loaded over HTTPS, but requested an insecure stylesheet 'https://www.disabilityaccessconsultants.com.au/wp-content/cache/autoptimize/css/autoptimize_9fec2bb5fe6b5444bc731fb57119e060.css'. This request has been blocked; the content must be served over HTTPS.

This breaks all CSS / JS as it doesn’t load in the latest version of chrome because of mixed content

• This reply was modified 6 years, 8 months ago by DigitalCourt.

well, that proved interesting;

so:
* the AO’ed files are requested over HTTPS (https://2vxa36mqtyb34gd0r1j9tlh1-wpengine.netdna-ssl.com/wp-content/cache/autoptimize/css/autoptimize_9fec2bb5fe6b5444bc731fb57119e060.css)
* but the CDN is redirecting to the non-CDN non-HTTPS version of the file https://www.disabilityaccessconsultants.com.au/wp-content/cache/autoptimize/css/autoptimize_9fec2bb5fe6b5444bc731fb57119e060.css which will indeed not load in a HTTPS-context
* the AO’d file is however perfectly availble on the HTTPS local version, e.g. https://www.disabilityaccessconsultants.com.au/wp-content/cache/autoptimize/css/autoptimize_9fec2bb5fe6b5444bc731fb57119e060.css

so this actually looks like a config issue on CDN-level? maybe check with WP Engine?

ok great! That looks promising.

Thanks – I’ll report back if it fixes it

so any progress on getting that redirect fixed @digitalcourt? ??

It worked! Thanks for your help @futtta

happy to hear so digitalcourt! feel free to leave a review of the plugin and support here! ??