My Blu ray player keeps
Remote command mode is different to the unit. Try resetting the remote by doing the following;
While unit is on, but no discs loaded or playing, remove the batteries from the remote (as if you were replacing them), press any button on the remote to clear its buffer, then, if the batteries you removed are OK, re-insert them. Point remote at the player, press and hold 1 and ENTER/OK buttons together for 10 seconds, then release. This should restore your remote's command to the original default mode, and it should control the player fully.
Panasonic and some SONY units operate on this principle with remote command modes (these differ between models). RC1 / DVD1 / SET1 is usually the default.
Very easy to do, takes a few seconds, and costs nothing.