Comments not displaying after update to 5.5

I updated two sites to WordPress 5.5. Both run the latest Graphene version. Since the update the comments do not show on prior posts unless I add a new comment to the post and when I add a new comment, it has a reply button but none of the rest of the comments do.

The comments are showing up as a number of ‘pings’ not comments. This appears to be the case on every page with comments.

I have tried disabling all the plugins and that does not return the comments . I have also tried walking back to the previous version of wordpress, with the plugins disabled, and that does not return the comments either. I am at a loss of what to try next and would appreciate any assistance.

The two sites are: RandomBitsofFascination.com and AustenVariations.com.

Thank you.

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