How can I transfer my subscription to another bank account?

Do not use a smartphone/tablet to manage your mySmartControl web account, but a laptop/PC!
 

You can transfer the subscription you are currently paying for to another account. You can adjust this yourself within your mySmartControl user web account. After logging into your web account, click on the email address in the top right corner of the screen and scroll down until you find the "Change payment details" option. You can use this option to make the change.