Sorry, I have actually managed to fix this myself.
I did update the support ticket but I guess I will not really need it now. (Thanks for the offer)
I only have one last question.
Now that I have made my currency and Tax Dynamic. I noticed something I need a little clarification on.
When I created the cart initial I used £ (£) however, it is now dynamic and working fine with $ usa dollar, depending on what is in the database
But, when I run throw the cart (express checkout) in PayPal sandbox, with $
The cart pages in my site is in dollar, but when I left to PayPal, on the enter info and check detail pages before I return to my site it appears in £ when it should be in $.
When I return to my site however it appears in $ again as it should.
My assumption of this is that it is just because I created the PayPal sandbox account in £ GBP, and when I went to enter my details in paypal sandbox it was for UK
But I just wanted to make sure that this is not happening because of a programming issue or error.