The latest information we have about what is happening to appeals is on the Coronavirus updates web page which is to the left of this column, I have copied the latest information below. You could contact HMCTS to check that they have received your appeal.
Q. What about appeals? A. From 20 March 2020 for a period of at least 6 months all appeals will be dealt with initially on the papers if it is highly likely that the appeal will be decided in your favour. A provisional decision will be issued and if you and the DWP agree with it that will become the final decision. Otherwise a full hearing will take place which will be conducted either by phone or by video-link.
Gary
Nothing on this board constitutes legal advice - always consult a professional about specific problems