PLEASE HELP! Can't reach site after installing SSL

I don’t have Cpanel or anything, i use VPS directly through PuTTY software, i log in as root and basically use ubuntu commands to operate. I had FTP but my VPS provider blocked access to FTP i don’t know why and i don’t know how to access my websites var/www/html/.htaccess through PuTTY.
I don’t think my website’s engine’s .httaccess is blocking anything…
Is there ANYTHING at all that i can do sir?