@AlvinYang - I looked at a few of your Webflow pages and didn’t see many of the SEO values explicitly entered.
If it was me, I would turn off the check box for re-using an earlier value and put in unique text for several of the fields, update, and then see if you are able to see the text you entered in the meta information on your WordPress site. If you are then able to see values, then that would suggest an issue with pulling in defaults, but that manual works.
I’d also double check to make sure that there aren’t any WordPress related SEO plugins that could be doing something somewhere. From what I was looking at from the WordPress site, there seemed to be some SEO content that I wasn’t seeing entered in on your shareable Webflow project.
I haven’t tried to remove the badge, so that’s a question for someone else.