Doorbird video doorbell connectivity issues

Thanks for your response. Doorbird is very similar to Ring video doorbell

Link here https://www.doorbird.com/

I do beleive my telco modem would be configured as a router since it connected to fibre gateway and the internal addresses are 192.168.x.x. range. 

AP mode should fix the issue but I want to keep it as last resort. 

The reason I did not configure Orbi in AP mode was I wanted to create a second internal network zone for more security. 

Is it possible to add a static route in Orbi for the video bell? 

Current details as below

Doorbird current Static IP 192.168.1.25 on Telco Modem

Orbi static IP on Telco Modem -192.168.1.25

Telco Modem default gateway  - 192.168.1.11, this is also configured on Orbi Router

What I want to do

Move Doorbird to Orbi  with Static address - 10.0.0.25

I presume if Doorbird wants to connect to internet IP XX, Orbi sends XX to WAN side, which sends XX to Telco Model gateway, which sends to Telco network. On reverse side, XX sends packed back to Telco Router but it may be getting lost between Telco router and ORBI.. Again not very sure