TL;DR - CM is gone; find a new rom to flash Long version - CyanogenMod is dead. Cyanogen is no longer maintaining the servers for the OS and you should consider a different rom. The app itself relies on mirrors, which I personally would not trust to be reliable.
This app is of no use. I am not able to download cm 13 rom.
I think its help for some lucky mens
I believe it will work out
Not too much rom available
How is Lenovo not on the list