With the Retro Receiver for SNES, you can use over 12 controllers wirelessly on your Super Nt. This includes all 8Bitdo's controllers and arcade sticks, PS4, PS3, Wii U Pro, and the Wii Mote. You can find pairing instructions for each controller on 8Bitdo's website here.
You can find 8Bitdo's latest Retro Receiver for SNES firmware here.
Ensure your console has the latest system update.
Ensure your controllers are charged.
Try to decrease the distance between your controller and the console.
Ensure that your Super Nt console is placed to minimize interference with the controller. It is best if it is placed out in the open and that it is not:
Behind a TV
Near an aquarium
Placed in or under a metal object
Pressed against a large amount of wires and cords
Within three to four feet of another wireless device, such as a wireless speaker or a wireless access point.
Check for possible sources of interference and turn them off. Interference can be caused by devices, such as:
Laptops, tablets, etc.
Wireless headsets
Wireless printers
Microwaves
Wireless speakers
Cordless phones
USB 3.0-compatible devices such as hard drives, thumb drives, LAN adapters, etc.
In most cases it will be enough to move these devices three to four feet away from Super Nt console and/or controllers. However, if you continue to experience this issue, please power these devices off while using your Super Nt.