Zoho RCB issues

Hi,

I followed the guide but could not succed.

1/ The RCB URL is not the right one in the manual. After searching on other documents I tried https://zoho.openraibow.io with a partial success.

2/ The virtual phone is visible in Zoho and incoming call successfully search for records but it does not add a call record in zoho. 

3/ On outgoing calls, when the communication is established, I see a blank rectangle in the bottom of the virtual phone.  I cannot do any call action (hangover for example).

Can you help me please?