Thank you for contacting us and I'm sorry about the issue you are experiencing.
Here's an image that might help:
If using mSecure 4 previously, you can learn how to redownload that version here: https://support.msecure.com/en/support/solutions/articles/36000064249-how-to-download-previous-versions
However, since the older version(s) of mSecure isn't a cloud-based app, there is no way to "sign in" to an account where your information is stored online. Because of this, each older version of the mSecure's login password is device specific and your information is not automatically restored when an older version of mSecure is installed or reinstalled on a mobile device.
We have an automated reminder in the older iOS app for making backups, so it is possible that you made an email backup some time in the past. Please search in your email accounts to see if you can find an email with "mSecure", "mism" or "mscx" in them. If you find an email backup you can use this guide to restore from an email backup file: https://support.msecure.com/en/support/solutions/articles/36000022240 or in mSecure 5: https://support.msecure.com/support/solutions/articles/36000064291
I just got new I phone and msecure is blank