If you have a custom domain name for your previous blog that you want to transfer or connect to your Pixpa website you can do so by changing or updating your domain DNS settings. Here is a complete guide to help you do that.
You can also use a 301 redirect link to redirect users and search engines from your old blogging website to your new Pixpa blog website. Here is a handy guide to help you set up 301 redirects on Pixpa.