Commenters having trouble posting comments on bog

I was hoping someone could help me figure out where I should go to solve this issue.

I recently was told that for the past few days, individuals as recently as this morning, was having trouble posting comments on my site, https://sunflowerfaith.com.

However, here and there, I have had individuals who were able to successful post a comment (including myself with several test comments). I’m at a complete lost what could be causing some people unable to post a comment and others no problem.