Helper
Phone the DWP about the problem, you will likely need to do it in the presence of the person making the claim as they will need to answer the security questions and authorise you to speak to the DWP.
There are no specific rules in this area, only that if the PIP2 form is not returned by the required date, the claim will likely be closed.
If they agree to send a new form then you also need to request an adjusted return date.
Gordon
Nothing on this board constitutes legal advice - always consult a professional about specific problems