Reorder Functionality is Default in SuiteCommerce Advance and SuiteComerce So we no need to Enable any things for this Functionality
For SuiteCommerce MyAccount (SCMA) we need to Enable the check box from Configuration
For SCMA website
Open Configuration by choosing website and Domain
Click on My Account Tab
Select Preference sub tab
Check the Allow User to Reorder Items box.
Save the Changes
For SuiteCommerce Advance Webiste
If item is Not showing in Reorder page There might be different issue
For Filtering the item we have different Criteria
so we need to check if all the criteria is true or not
One condition help to solve this issue is
Open Configuration
Click on Advance tab
open Site FIlter Sub Tab
Change the Site FIlter option to All
Save the Changes