I have updated the password for your Sandbox account to be: P@$$w0R|)
Please use this password with your Sandbox Account Main Company Number to login to the Sandbox Account Portal (16282227703)
Once you have logged in, please reset the password.
We haven't added the feature to delete applications yet. It will not hurt anything to have it around, but if you would like to no longer see it, you can submit a Developer Support case to have it deleted.