Hi Victoria,

Thanks for your support.
We got in contact with the Yoast team and it was the bug from their end.

Have a great day.

https://bhutanflights.com/

I have just used one H1 Tag in the homepage.

Link of the Yoast Error

Title and bread-cum settings, i have hidden. I can not use H1 tags in any of my pages cause Yoast says its already there even after hiding both title and bread-cum.