K
Welcome to the forum, you might want to have a look at the following FAQ which explains where everything is
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My full name is showing, how can I stop it?
Only you can make the Decision to appeal or not. Your post suggests that you were not awarded Mobility on the original Decision and this was only changed at MR. This suggests that your original arguments were weak so can you reasonably show that you cannot reliably walk more than 20m on the majority of days?
Gordon