I have and I am using an Ubuntu Server VPS where the host just does the initial setup and everything else is managed by the user. I have looked at that article and I did not find anything that I have not already done.
I should mention I have done the following:
– allowed port 80 & 443 through the ufw on tpc
– checked and updated the version of OpenSSL
– made sure php-curl was installed and an active php-mod
– I bumped my max_upload and max_post to 50M and the timeouts to 600.
I have exhausted a great deal of options, so I was hoping to get a little more guidance.