If you had done more searching here, you'd have found JVC's problem with power macros. Typically, the power commands work when you press the power button but do not work in macros because the TV requires a long repeat cycle. You supply that when you hold the button down but in a macro that does not happen.
A further search might have shown you that one CI here had modified the code with repeats so it would work in a macro.
It's JVC's problem.
It's not BlueDo's problem.
Your restocking fee is justified. You did a lot of research but missed a few key points.
There is no truth anymore. Only assertions. The internet world has no interest in truth, only vindication for preconceived assumptions.