Hi @wario9k,
The reason your subscription goes on-hold for SEPA renewal payments is because SEPA is a asynchronous payment method. It can take several days for the payment to clear and the charge.succeeded webhook event to trigger.
So, the renewal order is placed on-hold until Stripe issues the charge.succeeded webhook which your site will receive then mark the renewal order as completed which will then update your subscription’s status to active.
In test mode, I don’t believe the charge.succeeded event is ever triggered for SEPA, that only happens in live mode.
Kind Regards,