Hi there cjcorm27,
It sounds like you need to re enter the code to use text message forwarding between your iPad and your iPhone. All you should need to do is turn off forwarding for your iPad on your phone in the same place you turned it on, then restart the phone and turn it back on to get the code to regenerate:
Use Continuity to connect your iPhone, iPad, iPod touch, and Mac
Your iPhone, iPad, and iPod touch need to use iOS 8.1, and your Mac needs to use OS X Yosemite.
- Sign in to iMessage on your iPhone, your other iOS devices, and your Mac using the same Apple ID.
- On your iPhone: Go to Settings > Messages > Send & Receive > You Can Be Reached By, and add a check to both your phone number and email address. Then, go to Settings > Messages > Text Message Forwarding, and enable the device(s) you would like to forward messages to.
- Your Mac, iPad, or iPod touch will display a code. Enter this code on your iPhone to verify the SMS feature.
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