Well I did some research and amazon has added cookies option, Existing wvdownloader 1.9.2 doesn't have cookie option hence it cannot fetch mpd urls and widevine license.
I tried to insert cookie manually to a packet but cannot get it working
![Huh](https://bitcointalk.org/Smileys/default/huh.gif)
Anyways I am looking for wvclient which is built in python with amazon and primevideo addon, if someone has it kindly contact me through PM.