The API keys are located in the «Development» → «API Keys» section:
https://app.paymill.com/development/api-keys
Do not mess the test and live API keys: Paymill uses separate keys for the test and live modes.
The API keys are located in the «Development» → «API Keys» section:
https://app.paymill.com/development/api-keys
Do not mess the test and live API keys: Paymill uses separate keys for the test and live modes.