RMA approval not going to user

Hi,

Can anybody tell why RMA approval is not going to the approver.

Below is the status of the WF. OM Notification profile option is set properly, also the transaction types.

Activity Details: OEOL, 30608409, Return Order 95001313, Line 1.1..   Activity Definition   Name   Wait for Approval Internal Name   APPROVE_WAIT_FOR_H Type   Function Description   Wait for Approval Activity Version   15 Result Type   Default Activity Result   Message Name   Expand Roles   No Function Type   PL/SQL Function   WF_STANDARD.WAITFORFLOW On Loop Revisit   Loop Cost   0 Function activity cost in seconds. Error Workflow   System: Error Error Process   RETRY_ONLY Start/End Node   Performer Role Type   Constant