ISAPI dll with StarDocs hangs on SignUP

[alex.trejo@tttnet.com.mx]

Intraweb 14.2.6 Delphi 10.2.3

Using Stardocs platform to let user navigate through multiformat documents, standalone version works perfect. 
When deployed as dll, application hangs starting up.

StarDocs connection details are defined on ServerController.OnCreate:

    StarDocs := TgtStarDocsSDK.Create(nil);
    StarDocs.ConnectionSettings.ApiServerUri:= 'http://api.gnostice.com/stardocs/v1';
    StarDocs.ConnectionSettings.ApiKey:=API_key
    StarDocs.ConnectionSettings.ApiSecret:=API_secret;
    StarDocs.Preferences.DocPassword.ForceFullPermission:= True;
    // Authenticate
    StarDocs.Auth.loginApp;


Here is where the dll hangs. No errors, no messages, just hangs. Application pool also stays up and needs to be stopped manually.
Any clues?
Best regards,
Alex