My edgetg.com site (joomla) lost all its graphics, admin menus, and templates.... Other subdomain, Aretellc.com no longer can send email from contacts (maybe not related).
Main site amaranthalum.com seems operational.
I don't see any issues at all on that server. Have you checked your Internet connections? Your subdomain images all load fast for me and I am in the sticks of Colorado and the DC is in Atlanta.