As you know, the student version of Acrobat PRO 2020 is no longer on sale at Adobe - an Adobe employee (chat function) told me in response to my question regarding proof that proof only has to be provided to the reseller. However, you write "...to activate the licence, proof of authorisation must be deposited". What is now correct and where does the proof have to be submitted in order to obtain the licence key? Thank you in advance for clarification on this.