A store name is a very important factor of an online business as it will help your customer to remember you better and that's what you will be known as online. Here's how to change your Store Name (if you didn't get it right in the first place).
📌 Important note :
If you're referring to your store URL (e.x. change testing123.easy.co > testing456.easy.co), it's not suggested as changing to a new name can affect the apps you installed.
This easy.co domain is created following the first store name decided during store creation. For example, if you decide your store name is ABC 123 during store creation, this store will be given a https://abc123.easy.co domain.
From EasyStore Admin, you can go to Settings > General > Store Name
Type in your desired store name in the Store Name field. Once you are done, click on "Save" to apply the new changes.
Attached GIF image as extra reference: