Bluetooth integration in Plasma 5 (5.3 and also 5.4 beta) is broken. Kio bluetooth and obexftp does not work. When trying to access any of them, dolphin (and also krusader) displays "invalid protocol" message.
Good point, dolphin (and krusader) both expect kde4 kio slaves, and bluedevil-5.x only provides kf5 kioslaves. Similar issue we dealt with in kde-connect (interface for android devices)
Fedora 22 changed to end-of-life (EOL) status on 2016-07-19. Fedora 22 is no longer maintained, which means that it will not receive any further security or bug fix updates. As a result we are closing this bug. If you can reproduce this bug against a currently maintained version of Fedora please feel free to reopen this bug against that version. If you are unable to reopen this bug, please file a new report against the current release. If you experience problems, please add a comment to this bug. Thank you for reporting this bug and we are sorry it could not be fixed.