[Закрытые] Google fonts are not loading on our Staging website

Just encountered a very strange issue. All of the sudden, Google fonts are not loading on our Staging website. This happened directly after I added a new Avada FAQ category to the Staging site. I've tried to remove the FAQ category, but the font we use (Open Sans) is still not loading on the Staging site.

You can see this by opening DevTools, where fonts from "fonts.gstatic.com" ARE loaded on the live site (rebelbetting.com) but NOT on the Staging site (rebelbetting.dev.onpressidium.com). See screenshot.

Things we have tried:
* Switching from and back to Open Sans in Avada Options / Typography
* Disable and enable: Preload Key Fonts under Avada Performance
* Clearing all caches
* Contacted Pressidium (our hosting provider) support who investigated the issue from their end and they wrote:
"The fact that the website does not attempt to load the fonts at all on the staging instance suggests that this is a codebase issue. Please try contacting the plugin's support. I suggest contacting both Avada's and WPML's support and letting them know of your issue, as this could be a conflict between the two plugins."

The Staging site in a translated language DOES load the Google Fonts.
For instance in Norwegian: скрытая ссылка
But NOT loaded in the default language (English)...

Please help at your earliest convenience as we need to push Staging to Live with all new changes.

Thank you.