Haven't used it often, but I do know that some VPNs work with NOW, its a matter of finding the right one.
That being said, it has always been on my Amazon Fire stick, as I know that VPN apps are not avaliable to download on Roku branded devices.
Last I heard, Now detects VPNs and declines to work.
But there are plenty of free/free trial VPNs out there you can use to check this, without spending any money.
You used to have 30 days’ roaming on a UK stick abroad in the EU, but that stopped when we left.
In Spain, I used to use a Smart DNS service; again, you can get free trials. These try to catch the packets that seek location information, and lie to them that you are in the UK. It’s a bit whack-a-mole, as the streaming services try to outwit Smart DNS, and the Smart DNS morphs to cope, but it did mostly work. (which puzzles me, as I can think of several ways to entirely outsmart Smart DNS, though none of them seem to be in use).
I put the Smart DNS on my router, which solved the problem of devices where I couldn’t change the DNS, and also meant I didn’t have to alter all my devices’ DNS individually.
But if you get one of those glossy free magazines so beloved of the Iberians, you will find all sorts of ads for helpful services for expats wanting a taste of home (he said, obliquely).