I am trying to install and configure SiteMailBox on SharePoint and when i execute the .\Set-SiteMailboxConfig.ps1 i get the error :

Get-SPAppPrincipal : The HTTP service located at http://app:32843/87f2cfd3c96f4130b4f269d7cae8d99b/AppMng.svc is unavailable. This could be because the service is too busy or because no endpoint was found listening at the specified address. Please ensure that the address is correct and try accessing the service again later.

I went to IIS Manager and i wanted to verify my SharePoint Web services status, so i wanted to browse to the http://localhost:32843/Topology/topology.svc and i got the http 503 error service unavailable... According to this thread

Can anyone suggest me how can i solve this probelm please ?or even some suggestions? My appManagement is set up and here is my IIS site with its bindings : Snapshot


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