My website has an ssl error and says "This site can’t provide a secure connection"

My website says “This site can’t provide a secure connection” or a similar error in all browsers. Click here to go to my website. Below the error, it says “ERR_SSL_PROTOCOL_ERROR”

@jaydensar well your site loads on my side, although it seems that the CSS doesn’t load

Have you installed your SSL certificate already?

Please check this guide for more info on how to move your website to https: https://infinityfree.net/support/how-to-make-your-website-use-https

I tried to move it to SSL, but whenever I upload my certificate, it says that it doesn’t belong to my website.

@jaydensar said:
I tried to move it to SSL, but whenever I upload my certificate, it says that it doesn’t belong to my website.

That’s odd, where did you get the certificate?