There could be many causes to this issue, as listed below:
The Bluetooth module could have a malfunction because of the drivers and the files. I do, however, recommend a fresh installation of the driver, but not before you remove the the currently installed.
The devices needs to be in Discoverable mode for the Bluetooth module to see it and connect.
There haven't been issues, but it's also possible the Bluetooth module lacks compatibility with the devices you want to connect to. A new driver update is necessary to complete this procedure.