Documents out of Date Bug in Adobe Sign App

We have deployed Adobe Sign to 150 plus sales reps across the country.  The reps access the document library of our contracts from the Adobe Sign App and have the customers sign on iPads.  No contracts are stored on the iPads and the document library is in the cloud.

We keep running into the issue that after the customer signs we get an error message that says the document is out of date.  We either have to restart the digital form or complete the contract using paper.  This reflects poorly on us if we have to ask our customers to do something twice.

Does anybody know how to fix this error?  Thanks.