Thank you for posting, @creative_amazementd708.
I can understand why an unexpected €1 charge would be concerning, especially when you were trying to update your payment method.
As @Manan Joshi mentioned, a small authorization charge like this can be used to verify that the payment method is valid and is often temporary. I can also confirm that your Adobe subscription is active.
For reference, you can find more information about updating your payment information here:
https://helpx.adobe.com/account/individual/billing-and-payments/payment-methods/update-payment-information.html
Please let us know here if you have any other questions, @creative_amazementd708.