If the WD40 doesn't fix it, you can always try duck tape :)

Not sure if your chair is anything like mine, but if you can't see
anything stuck the problem is probably elecrical, not mechanical. The
remote is the first thing that comes to mind: the button that moves the
leg rest could be dirty or malfunctioning.

Does the leg rest part even tries to move? If yes, then something could
be actually stuck, but if doesn't I would check the electrical
connections underneath. Mine has a couple of wires that can be
unplugged or worse cut off if caught in between metal.

Hope this helps some. BTW shame on Lay-Z-boy for leaving you hanging .
They should do and know better. Good luck

wrote
Our Lay-Z-boy recliner, which is extra-tall, and made in Monroe,
Michigan, is stuck in the upright position. I mean the foot mechanism
will not got down. I have turned the chair on its side and have looked
and looked and can't find where it it stuck at. Has this every happened
to anyone? Any idea what usually goes wrong in these cases? I have
called Lay-Z-boy and did not a definitive solution. So our Lay-Z-boy
remains in the up position all the time, which is very difficult to get
in and out of. The extension part for the extra length is okay, that
part does retract, but still can't put the chair mechanism down.
Thanks! John