MZFW Exceeded CRJ

I have been using Sim Brief for the CRJ and for the past two flights I have been having issues with MZFW. I punch in what SimBrief has for ZFW and then I punch in the fuel. Hit Enter then hit Set Payload in Simulator. Doesn’t seem to be an issue in the ground.

I turn off the EFB and then turn it back on in the middle of the flight and I Get the MZFW error. I noticed that the ZFW I entered at the start has changed.

Am I missing a step?