QuickLatex time-out error

I’ve just started getting a timeout error when compiling QuickLatex.

"*** Error message:
Cannot connect to QuickLaTeX server: cURL error 28: Operation timed out after 40001 milliseconds with 0 bytes received
Please make sure your server/PHP settings allow HTTP requests to external resources (“allow_url_fopen”, etc.)

The plugin was working great before, and I don’t think I’ve changed anything. A bit of googling suggests that there’s an issue on the server end, but I’m not sure how to fix this.

Has anyone experienced something similar? Any suggestions on how to fix it?