I would not that ye should have fellowship with devils. Paganism is any religion other than Christianity or Judaism. Freemasonry offers a plan of Salvation without Jesus Christ. Therefore, Masonry is a non-Christian religion. Since Masonry is also not Judaism, it is clearly paganism.
Scripture is quite clear on the issue of Christian participation in paganism.
If you are able to participate in the paganism of Freemasonry after having the issues brought to your attention, then it is obvious that you have no intention of following Christ. It is possible that you may not have realized the full extent of how you have been denying Jesus, but you have been just the same. Jesus is willing to forgive you. In fact, He wants to forgive you. But, His forgiveness is conditional on your repentance.