Impossible to do anything

It has been more than two weeks that the app is not responsive continues to tell that Im non over internet even for 3G or wifi. No login, reservations lookups or search to rent a car is possible. What makes the app practically worthless. At this point Im deleting it and browsing using my laptop. Please fix it or do something. Its been almost three months since the last update.

Soyvitti about Hertz Car Rentals, v5.1