Failure to return a PIP form

Hi all,

I know this comes up a fair amount but just want a sense check. Client is v vulnerable and failed to both return a PIP form and then failed to engage with medical when one was arranged despite no PIP form returned.

I understand that the crux of the decision at the moment is demonstrating she had good cause to not return the form, and they should re-open the claim and assessment of her. If this is pursued to tribunal, presumably this only deems whether or not the claim re-opens, or does it also put PIP back into payment if good cause is agreed?

Is a new claim recommended only as a safety net of good cause not being agreed?

Thanks all

Starting point for me would be to see whether the claimant has a DWP additional help/vulnerability marker against them and if not then why not. If they did then this ought not to have happened. If they did not then an opportunity arises.