Featured Picture not being displayed on firefox

Hey all,
I was wondering if I could get some insights into an issue. The featured image on my blog isn’t showing up on firefox but it works fine on chrome and safari. The blog in question is:

https://inkblottherapy.com/blog/breakingbarrierstomentalhealthtreatment/

Things I’ve already tried:
-disabling ad block
-emptying cache and removing all cookies
-hard refresh
-reducing the image size to 270kb

Thanks for any help!

• This topic was modified 7 years, 10 months ago by bsmarway.
• This topic was modified 7 years, 10 months ago by bsmarway.
• This topic was modified 7 years, 10 months ago by bsmarway.