Defender Jordan Cranston admitted Cheltenham Town needed to regroup and look to respond in the right manner - after Emirates FA Cup defeat to lower level Maidstone United.
The Robins were left with a mountain to climb in the cup clash at the LCI Rail Stadium after a poor first half saw them trail 3-0 at the break.
A second half goal from Kevin Dawson and own goal from Alex Finney gave the home side fresh hope.
But a second goal from Delano Sam-Yorke – before he was sent off along with Dawson in the second half - saw Cheltenham crash out of the competition in disappointing fashion.
“It’s a very disappointing day for us,” said Cranston. “We wanted to go through but we just didn’t perform on the day.
“They came to cause an upset and we just weren’t at the races from the start.
“They hit us with three sloppy goals to concede from our point of view. We responded well second half but didn’t take out chances.
“As a collective it wasn’t good enough. We didn’t play as well as we wanted to.
“We probably hit double figures in the second half with chances created and they had a player sent off. But we have got to take them and our quality let us down.
“We have to clear our heads as quickly as possible with Tuesday against Newport and then Luton Town next weekend in the league.
“We have to look at our mentality. It’s about game management and it’s sloppy goals to concede from our point of view.
“That’s not like us and we can’t let this impact in our league form. We’ve got to re-group quickly.”