SSLconfigure Error

My website URL is:

Lightweight.be

What I’m seeing is:

Hi, i want to install an SSL certificate. I have a private key and a certificate via InfinityFree but i always get the error saying: ‘The certificate you have entered does not match the current private key.’ I litteraly copy and pasted the keys from the site.

I’m using this software:

I am using the SSL certificate and SSLconfigure from infinityFree.

Additional information:

I uploaded a screenshot of the error.kan ni