Buy Minecraft by Amazon standard address error message?

So I bought a 25 euro Amazon card because I wanted to buy Minecraft. However, it doesn't work.

In the screenshot you can see the problem. Could anyone help me, please

The address is already set up and I also tried it on the PC.

Go over the PC to "My account"> Addresses> Edit standard

There you have to add your address. If an address is not standard for you, edit it and set it to "Standard" ^^

Open Amazon on the PC, you can change your default address (as described by Lloyd58). This is often not possible on a smartphone.