I can't browse my multi domain site gives me 403 forbidden

Hi there great support team,

I will try my best to explain my situation here.

I have got multi site WordPress setup on one of the addon domains called wssolutionsau.com. Now I have got your plugin. The idea is to maintain one WordPress instance but run many sites from different domains through this plugin I suppose this is what it does.

So, I have another addon domain called deshideals.com.au which I have added in multi domain.

Now I want to create site like http://www.deshideals.com.au. So I went into Add Site and added a site with a prefix www so I get the name http://www.deshideals.com.au but the fun happens here. I am actually not able to go to the dashboard or browse the site. I am getting the following error.

"403 Forbidden

You don't have permission to access / on this server.

Additionally, a 403 Forbidden error was encountered while trying to use an ErrorDocument to handle the request."

It looks like a htaccess error but no clue how am I going to resolve this with this whole mix.

My questions is, what am I doing wrong here? There isn't enough information that I could find from the plugin heal link to resolve this and I didn't want to get lost in the forum site.

If I am doing anything wrong, then please correct me and help me to achieve what I am looking for.

I will look forward to your prompt support and feel free to throw me questions if you need to. I am from Sydney and it is 2:40pm here and I will be awake until midnight as it is really urgent for me to resolve.

Kind regards,
Wahid