If you don't want your customers to see ShopBase trademark, you can follow these steps to hide it regardless of your Bassy or Roller themes.

Go to Online Store > Themes.
Hit Customize.
Bassy Theme:

Roller Theme:

Scroll to Footer Section in the bottom left corner.
On Footer Setting, untick Show Powered by ShopBase.

Click Save to finish.

Go to Online Store > Themes.
Hit Customize.
Bassy Theme:

Roller Theme:

Scroll to Footer Section in the bottom left corner.
On Footer Setting, untick Show Powered by ShopBase.

Click Save to finish.
Published on: 25 / 09 / 2019