@Daarnu Apparently (from an old thread) there's no solution existing but you can turn off Malicious content filtering as a workaround.

@gtcislandgal Best approach would be to reset the RE650 to factory defaults and re-configure it from scratch. To reset the RE650 press its reset button for about 10 seconds, To configure use this...

@Eliashatzis This guide should be able to help you with that.

@SingerScientist Download the latest FW release from here. Use this guide (Case 1) to update the FW manually.

@KTag Go through Chapter 9 from VR300 user guide and learn how to use the Bandwidth Control feature.

@Nick_08 It's probably best to approach the TP-Link tech support on your local support portal for further assistance..