I can’t comment on the new content yet, but you’ve done away with the old certificates. I had a link to a high resolution image that resembled a real certificate. That link is a 404 error now. The replacement is a “legacy” certificate with very simple HTML / CSS that doesn’t look as good on a résumé.
And, of course, there is the outstanding issue that I can access other people’s accounts by logging into FCC with my LinkedIn account.