The "fake address" claim was raised in a court case by Jesse Binnall, and found to be lacking in actual evidence. Also worth noting, most versions of that claim suggest that it was mail in votes that were effected, but the state could hardly send postal votes to people who don't exist, living at fake addresses, and if there wasn't valid voter registration the votes wouldn't count anyway.
The leak did in fact occur at state farm arena, I can't even find purported evidence that there was no leak, beyond twitter claims backed by nothing. If you've got evidence there was no leak we can consider it, but AFAIK, there was a leak, it was fixed in a couple hours, and I don't see anything suspicious in that at all.
Ballots were showing up at 3am, because counting was still ongoing at that time. I don't see what's suspicious about ballots turning up to be counted as part of the official process.
I don't know which Biden spike you're referring to specifically. There was one in the reporting from decision desk caused by a clerical error, and another that showed up because the votes from a particularly populous and anti trump area came in, but there's nothing suspicious about votes from the same place arriving simultaneously, nor in the geographical breakdown of political preference.
The boarding up of windows was done as sensitive and confidential voter information was going to be visible through said windows and that's not allowed. The not allowing observers thing has several different versions, but one lead to a court case which gave us the wonderful non zero number of people" quote from a team trump lawyer, and in the other case I'm aware of observers were limited in number due to limited space, and required to stand a distance back that has always been required by policy and procedure.
As for the whole dominion machines thing, why don't we just ask Sidney Powell? I believe her current stance is that it was a lie so ridiculous no sensible person could believe it.