I want to download a drm-protected video that uses https://inkryptvideos.com to host this video

I inspected the website and entered the network tab, and there i saw Fetch/XHR name called 6aa286571c27d_video-720p3.mp4 and 6aa286571c27d_audio.mp4 , i entered the first and copied the request url,the first opened an audio file and the time was correct but only the first 5 seconds worked, but the rest didn't work, while the second file, it opened a video file with the same time with no audio, but only worked the first 10 seconds, the rest of the video makes some glitches and doesn't continue

the links :
1st ( audio ) : https://d-cf-50401b.inkryptvideos.com/media/c33a0c6876e27299/9a023f07/6aa286571c27d_au...6207dc8&sid=27
2nd ( video ) : https://d-cf-50401b.inkryptvideos.com/media/c33a0c6876e27299/9a023f07/6aa286571c27d_vi...6207dc8&sid=26

and actually i don't understand these stuff entirely so i need someone to help me,

this video is part of a paid course on this website https://mr-ahmed-adel.com/userprofile/courses/course/6