Please follow the below mentioned steps for resigning iOS app.

  1. Login into
  2. Goto "My App Data"    
  3. Upload your test application (.ipa file) by clicking upload File  button.

4. Select the App and Click on  "Ipa Resigning"  icon present under Action.

5. It  will resign the selected application and create a new copy in cloud drive.

6. Connect to desired iOS Device and Click Install , it will install the application on the device and now your app is ready for testing.