All Gunbot licenses use an API slot system. This allows you to update your registered API keys anytime or switch between different supported exchanges.
Manage your API slots on Profile > Edit license.
On the Edit license page you can see how many API slots your license has, and enter up to this number of API keys to be registered for use.
To register a new key, follow these steps:
Make sure to have an active trading pair running, without errors, on an already registered API key
Go to the Edit license page, select the exchange, enter your key and save the changes.
Refresh the page in case you don't see the form to update your keys.
After registering a key, you can use it as Master Key in your exchange settings.
if you've lost access to your last working API key, contact your reseller to update the registered key.