Good news at last!
I logged into play console and and found out the the roll out button was no more deactivated. So without second thought I pressed it and now the update is pending! I am pretty sure that will be approved cause I only aplied some major bug fixes without altering the already approved material of the game.
But how this "miracle" happened? To be honest I am not quite sure... There are two possible explanations:
a) A few hours before i received the negative reply from support, I had sent another one email describing one more time my problem, because more than 72 hours had past already since my first email without any response. Possibly another employee, more reasonable, received my second email and resolved my problem or...
b)...maybe was my extremely negative feedback I gave when I received an email asking my feedback about Google's technical support. In my feedback I wrote that my game is an adobe air app so it supposed to have extension until August 2020 and there was not any reference about asking any extension from Harman. I also expressed my disappointment for not including me any direction or link to provide me with some kind of form to request the extension....
I hope now that I will not face the same problems when I will try to roll out my next update...