Hosting support

Can someone help me ?? The problem occurs when I activate the mask in the configuration of my domain provider.
I have 2 domain name with 2 different vendors and I have the same problem with the 2.

So is it at the level of drupal or vendors ??
No problem with the mask for sites made with software other than drupal 7

I have an existing Drupal 7 site running at olddomain.com. I recently bought a new domain, domain.com, which I want to use now. However, it is at a hosting company, and I am hosting my website on my own server - so I don't want to move it to the new hosting company for a price, when I can host it for practically free.

Looking for some feedback. I've been with greengeeks for a while now and have been pretty happy (save for a definite pattern with the tech team not reading basic information every time that I submitted ticket) until today when I submitted a ticket because I can't access the permissions page...

Has anyone tried hosting a Drupal site on SiteGround? They seem to offer SSH access, which would be a great help with updating via Drush, running cron, etc.

Help! my website works allright but the links are repeated kind of ie for the home page, http://www.proliantsystems.com/www.proliantsystems.com/ and it brings the error 404 page obviously. How can i fix this?

Support at our current host has become an absolute nightmare and it's time to move. I'd appreciate recommendations on a web host.

Requirements/needs/setup:

Needs to be U.S. based

CPanel + WHM

Fully managed, but with full access for us

Various packages to choose from (cores, memory, space)

Currently we have two servers. One has a very busy site that is quite large and a development copy. Drupal 7 and CiviCRM.

The other hosts more than 20 sites, pretty much all Drupal, many with CiviCRM. All combined together, a fairly busy server.