Delaware Real ID License rejected at BNA and ATL

My Delaware driver’s license was rejected twice this week (at BNA and ATL) as not real-ID compliant by the license readers. My license has the Real ID star the upper right hand corner, and it was verified as Real ID compliant by agents after a wait and manual inspection. I don’t see physical damage to my license. Any idea what the problem might be? Is there anything I should do to resolve the issue?