@Masac  Hello, 

Tapo C210 also support ONVIF as other Tapo camera models,

May I know did you contact the DVR support and see if they have any advice with the error message   Can you help share a photo of the error and let us know your network topology to help locate the problem, thank you. 

Topology Example : Router model XX-<Ethernet>- DVR

Router <wireless>Tapo C210

@Solla-topee This is where the problem is described.

Solved language mismatch NVR/DVR Hikvision solution chinese /china ip camera

@Masac Hello, 

The video shows the error is gone when adjusting DVR Time zone and Language settings, do you mean Tapo C210 does not work in that way? If so, as this issue is pretty unusual, to address the issue and try to fix it, we would like to have a specialist look into this further via email. 

Besides, the ‘Language mismatch ' should be very related to Hikvision VDR, please confirm your Hikvison DVR is on the latest version, and also it is recommend to contact  DVR manufacture and see if they could help with the error at the same time. 

@Masac This is the last firmware installed V4.30.085 build 210409. The strange thing is that this problem only appears in the C210 version. For the C200 and 310 versions, everything is ok.