... in addition to the electronically submitted forms, you must also submit original signed forms to the Doctoral Degree office?
You should first send the necessary forms for the dissertation submission in advance by e-mail to the doctoral office, and afterwards you must send all the forms signed by hand - preferably with a ballpoint pen or pen - by post to the doctoral office. The same applies to the application for admission to the doctorate. The processing takes place promptly on the basis of the documents sent by e-mail. If you apply for an extension of the standard processing time, the electronically signed version of the form is sufficient.