Cheltenham boss Mark Yates accepted his team did not respond well to falling behind after they were beaten 1-0 at home by Crewe.
Harry Davis, son of Alex's assistant manager Steve Davis, scored the only goal of Tuesday night's League Two game from the Whaddon Road penalty spot in the 54th minute after the Robins' Sido Jombati tripped Luke Murphy inside the area.
"The boys know they can do it, but we were sloppy in the second half and we were caught out," Yates said. "We didn't play our usual game. We had to chase it and it didn't quite happen for us.
"Sido is convinced it wasn't a penalty, but other lads are saying it was and I haven't got a problem with the decision. But I thought their lad dived 10 seconds earlier and I think he did that a few times in the game, which needs to be stamped out.
"After they scored, we disappointed with the way we went about trying to get a goal.
"There have been a lot of good things this month, but we have to take our chances when they arrive."