If unable to grant us access to the CMS/DNS and/or Web Hosting in order for us to complete the configuration for the connection between content site and Tymber e-commerce, we can place the menu onto a subdomain of your choice.
The downside of the subdomain is that it will not help your SEO presence as effectively as the subdirectory (native architecture) structure of the Tymber e-commerce. Below is a quick article comparing the two: