Who are the Church?
As you and I disagree fundamentally upon nearly all matters of ecclesiology, Faith and Morals, we cannot possibly both be the Church. One of us is right, the other wrong or neither of us is right.
Whilst at least one orthodox Catholic exists the Catholic Church exists and functions. When orthodox Catholicism dies out only then will the Church cease to exist and function. This, of course is impossible on account of Christ's promise, "..... and behold I am with you all days, even to the consummation of the world." Matthew 28:20.