If you created a Sales Order in NetSuite and it doesn't show in ApprovalMax after synchronisation, please follow these steps:
Make sure that the respective workflow has been activated:
Double-check that all Sales Orders in NetSuite have actually been submitted for approval (i.e. they have the Pending Approval status in NetSuite).
Click on the Synchronisation icon
in the top right-hand corner (to sync documents between NetSuite and ApprovalMax):
Check the Sales Orders folder.