WEB Certificte - Security

Not a major issue but could intimidate some customers:

Websites prove their identity via certificates. Firefox does not trust this site because it uses a certificate that is not valid for game.ts2009.com. The certificate is only valid for the following names: images.n3vgames.com, www.images.n3vgames.com

Error code: SSL_ERROR_BAD_CERT_DOMAIN

Mozilla is tightening up on a lot of things. My brother received warnings about expired certificates for his Thunderbird email.

I'm not seeing this error with Chromium-based Edge.

EDIT:

I just checked using Firefox and I'm not getting this error now. Since this is a fresh install and there are no errors, try clearing your cache and see what happens.

I get the following error in Firefox latest version 88.0.
This website does not supply ownership information. And contents only partially encrypted.

I have Firefox set to HTTPS-Only Mode.

After I cleared my cache and disabled the HTTPS-Only Mode, it loads ok but I still get an error after game.ts2009.com redirects to:
https://online.ts2009.com/mediaWiki/Main_Page
I then get the same error.

I say the website is broken and is not secure.

Firefox 88 with https only and Malwarebytes Browser Guard, https://online.ts2009.com/mediaWiki/Main_Page opens perfectly with no warnings. Clicked the padlock and it says site is secure and https only is enabled.

Checked on 2 PCs, nothing wrong with the site.

I did however redo all my bookmarks that were formerly http and changed to the current https links a few weeks ago, when using old http links generated the either Error code: SSL_ERROR_BAD_CERT_DOMAIN error. and or the http link warning.

Maybe my bookmarks are wrong.
Edit: Yes that was it. Sorry.