blog comments have been deleted

We have a blog section and after finding that spam was being approved automatically, which wasn’t before, the previous comments have been removed from all the posts. From my understanding, there have been no changes to the blog settings and I am the only one that moderates the comments. Is there a way to revert the comments back to a previous state like the pages? or are they lost for good? is there anything additionally I can check to see what may have gone wrong or when the settings were last changed?

This has been taken offline and is being resolved in the support portal.