Louise
IT could mean two things;
First that they think you submitted no evidence at all, or
That, in their opinion, the evidence you submitted was not considered as relating to the ESA Descriptors.
As you have requested an appeal, you should receive from the DWP a bundle of evidence which will include all of the documents used in the making of the Decision so you can verify whether the information you sent them was actually looked at.
If the latter then you need to think about what you sent and whether it does actually support your limitations in regard to the ESA activities.
Gordon
Nothing on this board constitutes legal advice - always consult a professional about specific problems 
