Do I need a separate website subscription so that I can create a site in my subdomain

I have 1 domain and website (business).

I have created a subdomain, but when I try to access it it gives me the private site, please log in message. I which i want it to be accessible to the public. 

How can I fix this?

Do you have a custom domain? You need one of those before you can create a subdomain neither can have .squarespace as part of the domain.  

18 minutes ago, derricksrandomviews said:

Do you have a custom domain? You need one of those before you can create a subdomain neither can have .squarespace as part of the domain.  

Yes. my domain is usphtrademission.com 

6 minutes ago, karasu said:

Yes. my domain is usphtrademission.com 

Is it possible to have a stand alone subdomain page? because im thinking of setting up a page for international traffic (primary domain), and local traffic (my country) (subdomain). 

Is that possible?

Only if that page is part of your website. You can place the page or pages in the unlinked section of your site, it will not appear on the Nav bar and the subdomain will go right to it. You can hide the main nav bar and create a separate nav menu for each page or group of pages in the unlinked section of your site, this is not a difficult thing to do. 

I want to confirm if I understood your previous statement. 

Create a page that will be like xyz.com/subdomain instead of subdomain.xyz.com??

so the primary reason why I want to have a subdomain.xyz.com page is because I will be blocking people's IP from philippines in the primary domain (xyz.com) so that they'll only be able to access the subdomain. and the rest will be visiting xyz.com. for certain reasons.

Your clarification will be greatly appreciated.

The format you want for the subdomain will still work, you don't need the /page at the end once a forwarding rule is set up in the domain panel for example blog.mydmain.com will go to the blog page only once the rule is created. They are good for multiple pages of info, like music.amazon.com.  if I had the subdomain blog.derricksrandomviews.com I could make it work the same as derricksrandomviews.com/blog. I choose to use the second instead of the first, for me it is just simpler. I don't have to create it in the domains panel or create a forwarding rule. 

So I found out why it's saying private. It wants me to get another website subscription to publish the page I made in the subdomain. I will try that first and will circle back here later.

Subdomains can be forwarded to a second site.