Create a custom domain
Before adding your domain, you’ll have to buy one via a domain name vendor, such as one of the following:
Add your custom domain
On your SumUp profile, click "Online Store" in the left navigation panel.
Click "Settings".
Select "Web address" then click "Add a web address" in the top right corner.
Enter your custom web address and click "Next". We’ll check for your address.
Copy the A record listed under step 1 and input it in the DNS settings on your custom domain provider.
Return to your Online Store’s web address settings and click "Verify connection" to confirm the process.