Behavior exposed as REST API responds with a 404 over HTTPS site

I figured it out with the help of platform developer.

When you are trying to access the REST API over HTTPS site, there are a couple of updates/additions that need to be made in web.config of your website that's SSL enabled versus the one that's not SSL enabled.

1. Under section <swaggerwcf></swaggerwcf>, make sure everything all the $$$ entries are set according to your project
   <settings>
   <setting name="InfoDescription" value="$$$Description$$$"/>
   <setting name="InfoVersion" value="1.0"/>
   <setting name="InfoTermsOfService" value="$$$TermsOfService$$$"/>
   <setting name="InfoTitle" value="$$$ProjectTitle$$$"/>
   <setting name="InfoContactName" value="$$$DeveloperName$$$"/>
   <setting name="InfoContactUrl" value="$$$WebsiteURL$$$"/>
   <setting name="InfoContactEmail" value="$$$DeveloperEmail$$$"/>
   <setting name="InfoLicenseUrl" value="http://www.apache.org/licenses/LICENSE-2.0.html"/>
   <setting name="InfoLicenseName" value="Apache 2.0"/>
   <setting name="Host" value="$$$yourwebsite.com$$$"/>
   <setting name="BasePath" value="/rest"/>
   <setting name="Schemes" value="https"/>
   </settings>
2. Under section <bindings></bindings>, compare and update the binding
   <webhttpbinding>
   <binding name="restWebHttpBinding" contenttypemapper="EnrollmentPortal.Service.RawWebContentTypeMapper, HollyAdams.EnrollmentPortal-Project, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null">
   <security mode="Transport"/>
   </binding>
   </webhttpbinding>
3. Under section <servicebehaviors></servicebehaviors>, compare and update behaviors
   <behavior>
   <servicemetadata httpsgetenabled="True"/>
   <servicedebug includeexceptiondetailinfaults="False"/>
   </behavior>
   <behavior name="GTCServiceBehavior">
   <servicemetadata httpsgetenabled="true"/>
   <wcfmessageinspection/>
   <servicedebug includeexceptiondetailinfaults="False"/>
   </behavior>
4. Add new section (below section <extensions></extensions>)
   <protocolmapping>
   <add scheme="http" binding="webHttpBinding" bindingconfiguration="restWebHttpBinding"/>
   <add scheme="https" binding="webHttpBinding" bindingconfiguration="restWebHttpBinding"/>
   </protocolmapping>

Once the above changes are done, perform IIS reset and test the api again.