Hi,
They maybe delayed in answering your case. But the community helps each other, I believe :)
May I ask if your server meets the specs requirement as guided here: http://doc.siberiancms.com/knowledge-base/siberian-server-requirements/ ?
My suggestion is to go with VPS because in most cases a Shared Hosting has limitation.
Feel free to send me message and I’ll guide you further.
Regards,
arivonto