Hi Mike,
Thank you for contacting us. As long as you know your password, you should have no problems with a reinstall. You would simply sign back in to your account, and then your data would sync in from iCloud. However, don't do that just yet, as most problems like this shouldn't require a reinstall.
I'm going to have you check your account in mSecure's Settings real quick. Open mSecure and tap the menu button in the top left corner (3 stacked lines). Tap Settings in the menu, then tap "Account Settings." Does it show that you have an active Premium subscription set to renew in about a week and a half?
Mike