This APP applies for the following models of DVR/NVR/IP Camera:
ZR04ZN; ZR04ZM; ZR08ZN; ZR08ZM; ZR16ZK
ZR04FN; ZR04FM; ZR08FN; ZR08FM; ZR16JK
ZG2622MW; ZND5122M; ZNC6122M
(You can find the model number on the label at the bottom of the DVR.)
If this can't help you, please feel free to contact us.