Orthodoxy believes that God is infinite and man will never be "finished" knowing or loving Him. Orthodoxy also believes that one's transformation (deification, theosis) is not "finished" in this world. That said, I think that God has given you a great gift, and knows how great your love was/is for Him.
What do I mean? It is easy to become complacent even if you think you're not. It is easy to believe that your faith life is advancing when actually you are not exploring any of the uncharted territory in your soul. It is easy to pray and feel
the presence of God while not advancing any closer to that presence.
God knows this and has granted you the gift of taking away all
that has made you comfortable, all that has made you assured, all that was keeping you from going closer to Him. This way you are not to look for Him where He was before; do not wish for the old ways you felt when you had the faith life you now miss.
This is a tremendous gift. Think about it. To do this, God has alot of faith in you
He knows there must be so much to your soul but you just need to look and find it, open it and explore. Do not think you are being "punished" or any other such thing. He is responding with great love just like the great love you showed in your earlier faith life.
So don't stop now! Keep going. It is tough but I think you are headed for something greater than you had before. Ask Him to guide you to the best ways to see His presence in a new way; listen to the advice such as you have gotten here and just let the new
sink in and grow like a seed. And be patient.
With prayers and support for you,