Expired Key - Just one day more for a student

I’m an engineering student preparing the defense of my thesis. I have been using the key that my school (Pontificia Universidad Catolica de Valparaiso, Chile) has for the 5.3 Version, but unfortunately has expired yesterday (29th Aug). My thesis is finished, i just need to export the diagramas to a .pdf file, but i can’t do it now.

Please, can you provide me the key for that version? The file where I have all my work cannot be opened with the newer versions, so i just need one day more to export my model from the 5.3 version (Build number: 20061117). If not, that would be a serious problem for me, since i’m just a student and i need to do this last step as soon as it is possible. Please help me with this issue.

PS: Please let me know if you need me to attach my school’s expired license key


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Best regards,