@Linziboops: To start with, please restart your phone and check that the phone's software is up to date by going to Settings > Software Update. If the issue persists then head into Settings > Apps > 3 dots (top right) > Show System Apps > Bluetooth Share / Bluetooth Test > Storage > Clear cache / data. If this doesn't help, go into your Bluetooth settings, select the device you are having problems with and then tap "Forget" or “Unpair” from that device and then restart your phone. If the problem persists then run the hardware test: Samsung Members app > Get Help > Interactive Checks > Run through the Bluetooth test and share the results. I would also attempt to connect the keyboard to another device, as this will help to determine if the issue lies with the keyboard or the phone itself.