Offloading SSL in HAProxy using TrustCor cert (No-IP domain)

[spreckoak]

I am using No-IP with a domain I have purchased through them (I am not using Dynamic DNS). In creating the SSL cert they are asking for the Web Server / SSL version to us. I know that ACME uses NGINX/OpenSSL; and I know the version my Web server application needs where I created the Cert. But when I used Apache/OpenSSL (web server needed NGINX/OpenSSL, so this was my error) but the Key did not match. I will reissue using NGINX/OpenSSL on the web server but ultimately I want to offload this to HAProxy so should I not be aligning to PFSense version of Web / SSL if so what should I be using?