Suddenly FAQ Structured Data Not Working?

Hello,
Thanks for your excellent plugin. I installed this plugin few weeks ago and it worked flawlessly on my blog with classic editor. However, from the past few days, i am unable to see the FAQ section (even if i inserted questions and answers using your plugin and code exists on the page). I have not made any changes recently and i am wondering, what’s happening. Kindy guide.

The page I need help with: [log in to see the link]