Zaxby's review: closing at 2 pm and not opening until 5 pm

Today, Sunday, September 22, 2019, at approximately 2 pm we stopped at Zaxby's in Paducah, KY, to discover the door was locked. Another woman said the drive thru was closed and said to come inside. There were people inside eating, so we called and they said we are closing until 5 pm, but gave no reason and no signs were posted on door. There were several other people that were turned away and left wondering and thinking odd in the middle of the afternoon closing for 3 hours. What's up?