How to download videos from durgasoftonline?

I have bought a course form durgasoftonline.com and it has a validity of 60 days, I want to download it but it is in m8u8 format (hls) and is encrypted. Tried downloading with IDM but it was not possible, I am able to watch the video, other than screen recording (it has around 200 videos of 1hr each) is there anyway by which we can download? As I can see few courses from this site have been leaked already, so there is a way to download it. They are using spayee to host their videos

bro if hls 128 encryption is there on the video and when you download you get small .ts files you can never download it you can only record the video using an extension in mozilla,but the size of video will increase … if encryption is not there you can download…