Ignoring everything that Co-Pilot advised!!!
I created a new Tuya account based in North America, just for safety I also set my VPN to a server in New York.
Created a new project, using EU-Central. Note: All data centres were available for selection not just the EU-West.
Note: You can only use one data centre in a free account, so once it is selected, all of your projects will use the same one. If you get it wrong then you will heve to delete all of your projects and start again.
Linking to the Tuya Smart+ app worked. I added a device to this, and it shows up in my project, and I was able to find the local key using npx @tuyapi/cli wizard that had previously been unavailable.
Bad news I can’t create the device. I’ve had to manually set Protocol to 3.4 but I am now getting an “Invalid Capability - Feed Portions”
Stephen