Good morning perez, what is your hive set up, couple of deeps and a super or two? So, this time of year robbing shouldn't be so bad so you have a lot of options. Depending on your inner cover setup you can rotate the inner cover for an upper exit. You could also add popsicle sticks under the inner cover to wedge them open. You could also drill a hole in your supers to allow for an upper exit/vent.
My preference is a shim that has an hole in it to allow for ventilation. It is also very helpful in winter for feeding fondant.
https://www.betterbee.com/feeders/shim8k.asp
Just because its worth mentioning the board man feeder you use are always very problematic for robbing, especially late in the season.