I did not dig extensively into the issue you are seeing because that app code is 4 years old. The app version you can get from my.phantom.us right now is far more recent. I would also suggest following the advice in the release notes about deleting old assets and rebuilding them.
PassiveTotal Release Notes - Published by Phantom February 05, 2019
Version 1.2.36 - Released February 05, 2019
Compatibility changes for Phantom release 4.2
Version 1.2.28 - Released February 06, 2018
App action views and Logo updates
Version 1.2.25 - Released August 23, 2017
3.0 compatibility update release only
Version 1.2.23 - Released July 27, 2017
3.0 compatibility update release only
Version 1.2.22 - Released March 23, 2017
Minor error handling fix
Version 1.2.21 - Released December 12, 2016
NOTE: Existing PassiveTotal Assets must be deleted, and a new one must be created after installing this version.
The app has been rewritten to use the new PassiveTotal APIv2, their v1 API has been deprecated
Added "whois ip" and "whois domain" actions
Removed verify server certificate option, we now always validate the certificate
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