Keyword meta box & readability options not showing

I am using the last version of the Yoast Plugin and since I made the update the meta box for fill in the keywords and also the readability options are not showing up in both Posts or Pages edit dahsboards. I try every recommended step I could find in Yoast forums and I check everything inside the Plugin settings and it should be working fine. For some reason it’s not showing up. I already see other related posts from other users reporting the same issue I am almost 100% sure that this could be a bug inside the latest version of Yoast Plugin.

My website is https://kidsbeetv.com if you want to check JS scripts errors or blocking issues, something that I also do already but it could be missed out for me.

I hope someone could help me soon, once this is a critical part of our business.

cheers,