[Admin] Cannot delete account if team subscription slot is assigned

[AlexTugarev]

Bug description

Account deletion fails if there is a team subscription slot assigned.

Steps to reproduce

1. Assign a team subscription slot.
2. Try to delete the account of the assignee.
3. See deletion fails with no feedback.

Expected behavior

Team subscription slot should be made available and deletion should succeed.

Example repository

No response

Anything else?

No response

[jankeromnes]

FYI, I believe the bug is here: https://github.com/gitpod-com/gitpod/blob/a88ddab2ec06167186c6bce9c1fe44469a55bc50/components/server-io/src/user/user-deletion-service.ts#L24-L39 -- deletion code seems to call this.chargebeeService.cancelSubscription(...) with a paymentReference that is not a valid chargebee subscription ID.

The code doesn't seem to properly handle:

• assigned team plan seat (which creates a "synthetic" subscription with paymentReference = '')
• subscription purchased via GitHub (has a paymentReference that starts with github:)

[JanKoehnlein]

There is not much we can do for subscriptions via GitHub, as their API doesn't allow that. But we should notify the user.

[JanKoehnlein]

See
https://github.com/gitpod-com/gitpod/tree/jk/cancel-team-4229
#4501

[csweichel]

/schedule