Thank you very much for your elaborate answers and for all the information.
Regarding the transfer of my rights from the Dutch unemployment fund to Denmark, actually I am Turkish, do you think that it might still be possible for me to transfer funds as a non-EU citizen?
I understand that my 3 year employment in Denmark (in which I was not a member of any A-kasse) in the past does not allow me to be eligible for getting unemployment benefits. It does not make sense for me to become a member at the moment, as I will not be able to get unemployment benefits, even if I pay for A-Kasse (in case I start paying from now). Is this correct?
I checked the website of Akademikernes A-kasse and it seems like PhD is considered as an employment and not as an education. https://aka.dk/din-situation/nyuddannet/ph.d/
In this case, I understand that I cannot become a member as a student in any A-kasse. Is this correct?
Thanks in advance for your help.