This is a bug with the SMS Magic Interact version 1.44.2 or the older ones. We have resolved this in the latest version, i.e. 1.45.2. If you have more than one fields with the same Label, this issue arises. A permanent fix would be to upgrade to the latest version.
The Link to upgrade:
https://login.salesforce.com/packaging/installPackage.apexp?p0=04tU00000001Zry