Facing issues on Add and Action button for SharePoint Document Grid in CRM

Hello Team,

I have done the Integration between the Online CRM 2015 with On-Prem SharePoint 2013 using “CRM list Component”. In document Section (Sub grid in CRM) “Action" and “New” buttons are not working but I can able to do Add/Edit/delete/Open a SharePoint.

FYR: Attached Snap as well and CRM & SharePoint versions as below.

CRM 2015 Online (7.0.2.72) (DB 7.0.2.61)

SharePoint 2013 On- Premises

Please help me out here.