Logitech *should* do a replacement from what I've heard. They offered my brother a replacement for his cracked screen 880. They just replaced his One because the paint is all peeling off, via the same procedure. Basically they send you a new one and disable the old one through their web site.

You should contact them again over the phone an escalate the issue.

I'm surprised they don't send you a new remote, since it would cost more money to buy a replacement LCD in single quantities than a whole new remote at their BOM cost.

Personally, I'll never buy another Harmony product again. Hardware quality is abysmal and software is even worse. I no longer recommend them to friends either.