As long as the mobile version of PP+ can export a CSV file, you should be able to import that data into mSecure on your desktop. Are you saying you have a Mac computer for that, or are you asking if you can import a PP+ CSV into the iOS version of mSecure?
The only way we can import PP+ data if from a CSV export file, so I don't think that's going to be possible. Is it no longer possible to get access to the Mac PP+ app? You might contact their support to see if that's possible.
Is there any way to import the data from the mobile version of password plus to secure? I never had the desk top version for my Mac.