Sorry! It is not currently possible to change the primary Site Address in your Fotomoto account.
For Free account users we recommend deleting your Fotomoto account and creating a new one with the desired site address
You do have the option to simply add an alternate Site Address, but note that your primary site address will appear on your eCards, on receipts that go to customers, etc.
If you're a Pro Plus subscriber, you can also follow these instructions to add another website to your Fotomoto account.
If you have any questions, feel free to contact Fotomoto Support.