Unbind error code 99994 on my EZVIZ C3W camera

[elrosso]

Hi,
I tried to unbind my C3W from a previous account (of someone else i don't know). I get error code 99994 after username and password.
I did reset the cam and connected to utp cable.

What does the error code mean? How to solve this?
I use the 3.11 version

Thanks for the first help.