According to Judge Stephanos Bibas who wrote on behalf of the three-judge panel that reviewed the appeal, "Free, fair elections are the lifeblood of our democracy. Charges of unfairness are serious. But calling an election unfair does not make it so. Charges require specific allegations and then proof. We have neither here." So, no mention of amending the complaint only that there’s no allegations or proof of fraud.  However, there is the possibility that Trump’s team may have just asked for a judgement without providing proof so as to get it to the SCOTUS where the proof will be provided.