Hi,
latest enpass does not crash anymore on IOS 9.3.5 but now autofill does not work with safari. from enpass safari starts but no password ...
Safari on IOS 9.3.5 does not have the password-autofill-option like the later IOS versions have ...
Enpass browser is missing badly, that worked like a charm, so, still an unusable situation on older IOS devices.