Wow, I did not realise that it was not allowed in these countries, Coinbase seem to be very strict in terms of abiding by the different laws, I guess to operate in this scene you have to somewhat.

I am not sure how feasible it would be to use a VPN as you would surely need to link you bank details as that's how Coinbase allows you to buy and sell and I would think it would show up that you are located in DE via your bank details