A change to joint billing not possible
I recently moved towards mailbox.org. Great working e-mail service. However, I have a custom domain and managing all e-mail accounts for my family. Therefore i use joint billing. I am willing to upgrade to the new price plan: standard (current mailxl) and would like to use the possibility to gain the 50% discount. When i select the plan i get the error:
Error: A change to the Light, Standard or Premium plans is currently not supported for team accounts with joint billing.
Does anyone know how i can upgrade my subscription?