Hello @Bart Schouten
Welcome to the Atlassian community.
As a user community we don't have access to do anything with your Loom account.
However, you can self-serve to cancel your Loom subscription and delete your Loom account. Refer to the following documents:
Downgrade or cancel your Loom plan
Delete your account [Loom]
It looks like you're new here. Sign in or register to get started.