Okay, you can appeal to the U.S. Court of Appeals for Veterans Claims. You can hire an attorney to represent you, or you can represent yourself.
Do I appeal it all or do I have to state what parts I want to appeal?
You can include all or just some of the issues VA has decided . You will need to list the issue you disagree with and the VA decision date for each
I believe I missed the deadline in submitting my appeal due to VA's mistake. What evidence do I need to back up my claim?