To configure Mollie:
- Install, Activate, & Enable Mollie Extension
- From Manage, go to Store > Extensions
- Select Payments from Category in Store Extensions section.
- Find Mollie and Click Settings Cog Icon
- Provide your test or live credentials: Organization Access Token and Profile ID
- Click Update
How do I find my Organization Access Token & Profile ID
See: https://www.mollie.com/en