Vyakar app must be activated before it starts matching or routing leads. Activation is very simple process and it must be performed by system administrator.
Routing Rule and Order:
Installation Failure Error (Sandbox)
Salesforce does not inherit all the required “Chatter” features in Sandbox, thus throwing installation failure error as shown below.
To resolve the issue, please remove the Chatter component from the Account page layout in a Sandbox.
Other way it worked for people:https://developer.salesforce.com/forums/?id=906F0000000kAo3IAE
Email Error (Sandbox)
Email is not correctly setup in some organization (especially sandbox). If “No Mass Email Permission” error is displayed during setup (see below)
Check you Deliverability settings under Setup > Email > Deliverability. “Access to Send Email (All Email Services)” must be set to All Email.