st.jono

I have bought a used AVR-808 (H265+ capable DVR with XMEye cloud app) but it has password to access it. I have tried default password and password generated by "CCTV Super Password" apps with no luck. Pull the battery off also not give any help. When I tried to scan verification code, it send the code to the email address that might be the former owner. Is there any way I can hard reset it? or maybe a Superpassword? Any kind of help I would be appreciate it.