Is there any way to access/edit the HTML or CSS in Adobe Portfolio???

My biggest issue with adobe Portfolio is the lack of flexibility for customization. Other website building sites allow you to manually edit the code--Is there really no way on Portfolio??? I am constantly trying to do seemingly simple and obvious things which are not available/permitted. It's so frustrating that I may give up and pay for Cargo, but really don't want to rebuild my site from scratch. 

Specifically, my current frustration is the distinction of "collections" from other pages. Why can I not have a page which contains a bunch of links to other pages (i.e. collection) that also has an image, or a link to an external site, or embedded media? It should not be impossible to have a single page with links to both internal and external pages. SO frustrating!

Also, why is the layout formatting only pixel based instead of percentage. I can't add sufficient space on the desktop version of the site because it creates WAY too much space on the mobile version. I should be able to size and space things by percentage to avoid this.

Really I just want the agency to customize pages in general.  Why won't you allow us to access the code?

P.S. Can we please get a Support Community page for Portfolio?