I can't assign devices in any of the Quartus versions because I can't see them.

I can't see any Devices when I try to assign a device in the 'Assignments -> Devices' window. I am using DE1-SOC which has Cyclone V. I am facing the same issue with other versions as well. I have tried both, the web and the subscription versions. My professor used Quartus 13.0 to test run the project and he said it worked fine for him. He could see the devices. Also, if it helps, I am following this manual - https://www.intel.com/content/dam/www/programmable/us/en/pdfs/literature/tt/tt_my_first_fpga.pdf, and am on page 12 on 'Assign the Device' step. I don't see the window as it is on page 13 of the manual. In fact, I don't have a single device there.

I would really appreciate it if anybody could help me out. I urgently need to make it work since I have to do a project on it and the deadline is close.

Thank you.