AutoSSL Installation (Domain Verification Error) on Opencart

Project buget is set at $10. Looking for someone who has at least 5 years of experience working with Opencart with Linux Knowledge about AutoSSL to do this task. 1. I enabled AutoSSL on my Server, but I keep getting an error in the install log. It seems I need to verify the domain via Comodo somehow, I need someone to show me how to install the SSL certificate on my sites via AutoSSL. I keep getting this error: 1:48:26 PM WARN The domain “[login to view URL]” failed domain control validation: The system queried for a temporary file at “[login to view URL]”, which was redirected from “[login to view URL]”. The web server responded with the following error: 404 (Not Found). A DNS (Domain Name System) or web server misconfiguration may exist. at bin/[login to view URL] line 562. 1:48:27 PM WARN The domain “[login to view URL]” failed domain control validation: The system queried for a temporary file at “[login to view URL]”, but the web server responded with the following error: 404 (Not Found). A DNS (Domain Name System) or web server misconfiguration may exist. at bin/[login to view URL] line 562. 1:48:28 PM WARN The domain “[login to view URL]” failed domain control validation: The system queried for a temporary file at “[login to view URL]”, but the web server responded with the following error: 404 (Not Found). A DNS (Domain Name System) or web server misconfiguration may exist. at bin/[login to view URL] line 562. This seems to be an .htacess issue. when I moved .htaccess out of the way, it works fine. I added this code in .htaccess: RewriteCond %{REQUEST_URI} !\.(txt|tmp)$ It's still not working.