advanpix

Make sure that webserver software you are running have permissions to write into the “wp-content/ql-cache” directory.

Turn on the cache for WP-QuickLaTeX. Open its settings page and follow the instructions there.

But your site is very slow overall. Check site optimization techniques, like cache (WP-SuperCache, etc.), etc.

I have checked your website – you need to block “Photon” feature in JetPack plugin.

Hi,

Yes, we have just blocked that domain, because you have never used cache in QuickLaTeX.
This puts load to our server (every formula image was served by our server).

Please enable cache in QuickLaTeX plugin settings page.
We will unblock the address later today.

Hi,

Do you host all the websites on one IP? What is it?
Have you been using cache on all websites?

If cache is disabled, then QL server must serve every little image for your websites on its own. This puts heavy load on QL server.

Therefore, we block IP addresses where cache was continuously disabled for >6 months.

Let me know IP address/domain names of your websites – we will enable them again. But please use the cache from now on.

Congratulations on this and thank you for your donation!

Unfortunately we (as QuickLaTeX developers) can do very little when it comes to enabling third-party plugins & themes with QuickLaTeX support.

As for backslashes – please make sure that Markdown feature is disabled in JetPack. Usually it is responsible for stripping off the backslashes.

As for the equations in “answer explanation” – theme simply doesn’t apply QuickLaTeX filter to this text.

Are equations in “answer explanation” shown correctly when you use JetPack?

The filter name is ‘quicklatex_parser’.

Please take a look on lines 305-311 in wp-quicklatex.php to see how to install it for custom post types.