Below are some excerpts from the link you provided above:
The woman clothed with the sun symbolizes the United States of America and the Church which are clothed with the Son.
There is nothing whatsoever to interpret the sun in Rev.12:1 as referring to the United States. To do is pure conjecture.
Also, there are three symbols list, which is the sun, moon and twelves stars. God gives us the answer to the symbolism in Genesis 37:9-10 regarding Joseph's dream:
"Then Joseph had another dream and told it to his brothers. “Look,” he said, “I had another dream, and this time
the sun and moon and eleven stars were bowing down to me.”
He told his father and brothers, but his father rebuked him and said, “What is this dream that you have had? Will
your mother and brothers and I actually come and bow down to the ground before you?”
Sun = Jacob
Moon = Wife(s)
Eleven Stars = Jacob's eleven son's, with Joseph making it twelve stars
The woman then in Revelation 12 who is clothed with the sun, with the moon under her feet and wearing a crown of twelve stars, is figurately representing the nation Israel.
The Church part of her has spread the Gospel around the world and inherited the 12 apostles as a crown
The woman/Israel giving birth to a male child and the dragon/Satan and the stars/angels being cast down to the earth, are both future events which will take place in the middle of that last seven years. The last time that the church is mentioned, is at the very end of chapter 3. After that the word church never appears again until Rev.19:6-8 as the bride at the wedding of the Lamb. And the next time we actually see the word "church" again, is in Rev.22:16 in the epilog.
The reason for this, is because the church is caught up to heaven as represented in Rev.4:1. The voice that sounds like a trumpet was identified as being the Lord in Rev.1:10. This is the same voice that sounds like a trumpet in Rev.4:1 which says "come up here." After this, the word "church" is never used again.
The other reason that the woman cannot be representing the church, is because all of this, the woman giving birth, Satan and his angels being cast down to the earth and the fleeing into the wilderness, all take place during the time of God's wrath which the church is not appointed to suffer and that because Jesus already suffered God's wrath on behalf of every believer.
In addition, the woman/Israel, flees out into the wilderness to a place prepared for her by God, where she will be cared for 1260 days, which is the last 3 1/2 years of that seven year period. This fleeing is the same as mentioned in Matt.24:15-22 which will be caused by the abomination being set up in the holy place.
The seven heads represent 7 kingdoms.
The seven heads also represent seven hills upon which the woman sits, which is referred to as a city. It is Rome's headquarters, the Vatican. You are correct in that, the seven heads also represent a succession of seven kings. At the time that John was receiving this information from the angel, he was told that five of those kings had fallen and that king number six was currently ruling. King number seven had not yet come but when he did, he would only remain a short while. Then there is an eighth king, which is that future beast who will come up out of the Abyss.
The dragon which is Satan in Revelation 12 has 7 heads with 7 crowns on the heads which means that these are spiritual kingdoms and the 10 horns are nations that govern these kingdoms.
"The woman you saw is the great city that rules over the kings of the earth.”
At the time that John was receiving this information from the angel, Rome was that great city that ruled over the kings of the earth.
The seven heads are seven hills on which the woman sits
Since the woman was previously identified as a city, then the woman as city sits on seven hills. Rome was built on and is famous for her seven hills.
A past succession of kings:
"They are also seven kings. Five have fallen, one is, the other has not yet come; but when he does come, he must remain for only a little while. The beast who once was, and now is not, is an eighth king. He belongs to the seven and is going to his destruction."
The seven kings above were a succession of seven kings, with the eighth king being that angel/beast who comes up out of the Abyss. All seven kings have already come and gone from John's time period.
Ten future kings who will rule in conjunction with the beast:
"The ten horns you saw are ten kings who have not yet received a kingdom, but who in a short time will be appointed as kings along with the beast. They have one purpose and will give their power and authority to the beast.
The seven kings have already come and gone. The eighth king/beast is future.
The ten kings are future kings who will rule concurrently with the beast.
Each head had a blasphemous name but one head had a wound that was healed. This head that was wounded represents either Christianity or Islam because this beast was wounded by the sword.
The head that receives the mortal wound is that eighth king who belonged to the seven in the past during John's time.
A fatal/mortal wound is not something that can be survived, which is why the inhabitants of the earth are in awe and follow after him. The deception continues with the false prophet who will perform miracles, signs and wonders, for the purpose of deceiving the inhabitants of the earth into believing that the beast who received the fatal wound is God.
This beast was given authority to make war against the saints and to conquer them.
The saints in the verse above, is referring to that group wearing white robes which no man can count, who will come out of the great tribulation introduced in Rev.7:9-17. This is not the church, but are those who will have become believers in Christ after the church as been caught. The beast makes war against them because they will keep the testimony of Jesus and the word of God. They will have not worshiped the beast, his image nor received his mark.
The mark of the beast in Revelation is the number of man or 666. Man’s number is 6. Man has the number 6 because he is made up of three components (mind, body, soul).
The reason that it is the number of a man, is because antichrist will be a man. Paul referred to him as "the man of lawlessness." When the beast/angel comes up out of the Abyss, he will be the power behind the antichrist who will be a man.
I'm done here. Most of what I have read in that document, is pure conjecture, i.e. there is no foundation to prove any of those things. It's kind of like, just make it up as they go. I deal with the details of scripture, not guessing or arbitrary assignments.
There has to be something in scripture to support the claims that are being made, of which there is none.