Uninstall the bluetooth dongle and start over. The pairing can be trouble for some since it doesn't make sense to some that you have to type it here and there and again... I don't have your manuals for the products so I can't check them. You can help others help you by posting links to the manuals.
I'm new to this Bluetooth thing. I thought it would be simple but that's not working out so well. I have a Toshiba Tablet notebook running XP Tablet edition that didn't have built-in bt so I got a usb dongle. I think it's made by Cellink. I wanted bt for this keyboard I wanted to use. So, I first loaded the dongle software. Afaik, everything loaded ok. Then I loaded the keyboard software/driver. When I click on the big orange ball, the keyboard is found. But when I right click on the device and try to pair it, I get an 'Authentication failed' error. It asks for a passcode but it's already got one in there and it won't let me change it (not that I'd know what to change it to if I could). That's as far as I can get. What am I missing?
I doubt anyone has ever used this keyboard but I'll mention it just in case: It's from freedominput.com and it's called the mini-duo. I've been trying to get tech support from them but they evidently don't know what they're talking about. So, I'm not sure if there's an issue with the keyboard or something on the pc or dongle end.