Domains [QUESTION] Need help in redirecting HTTPS traffic to HTTP

Hello,

I am totally new to server management. I installed centminmod and generated let's encrypt SSL several times now it says too many certs issued.

I installed centminmod again with no self signed ssl.
I have completely setup my website but since it was an old website most of my google search visitors will goto https://domain.com/post

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Can someone give me detailed instruction on how can I solve this issue by redirecting https visitors to http. I will reissue let's encrypt cert after 7 days.

Currently I have positive SSL from namecheap but don't know how to install it because I am totally new to all this.

Server config:
Script: Wordpress
RAM: 12 GB
Storage: 300GB SSD
CPU: 4 Cores

 

Finally, I found the solution by following these pages:
Generate Centmin Mod Nginx Vhost - CentminMod.com LEMP Nginx web stack for CentOS
Nginx HTTP/2 & SPDY SSL Configuration - CentminMod.com LEMP Nginx web stack for CentOS

Steps for those who encounter this problem:
Generate self-signed SSL by this guide:
Generate Centmin Mod Nginx Vhost - CentminMod.com LEMP Nginx web stack for CentOS

How To Switch Self-Signed SSL Certificate To Paid SSL Certificate ?
Nginx Vhost & NSD DNS Setup - CentminMod.com LEMP Nginx web stack for CentOS

Then:
Nginx HTTP/2 & SPDY SSL Configuration - CentminMod.com LEMP Nginx web stack for CentOS
Ssl-Unified.Crt

What I did wrong was:
Since I was concatenating the certs I didn't think to upload certs in a folder using FTP and was making concatenating by making the SSL provider files by nano.