"There is a class of devotees called Gauranga-nagari, who stage plays of Krsna's pastimes using a vigraha, or form, of Caitanya Mahaprabhu. This is a mistake that is technically called rasabhasa. While Caitanya Mahaprabhu is trying to enjoy as a devotee, one should not disturb Him by addressing Him as the Supreme Personality of Godhead."
Caitanya-caritamrta, Adi lila 7:10
"Sometimes Lord Caitanya, because He is Krishna Himself, somebody worships Him in the same manner as Krishna. But Krishna was in the role of enjoyer and Lord Caitanya is in the role of being enjoyed. So the party known as Gauranga Nagari, they are considered to be deviated from pure devotional service, on account of Lord Caitanya given the same facility of Krishna, which He did not like. Our service mood should be compatible to the attitude of the Lord. Not that we should overlap the attitude of Krishna to Lord Caitanya, or Lord Caitanya to Krishna, or Krishna to Ramacandra, or Ramacandra to Krishna. Therefore, in the Sastras, specific injunctions are there, just like to worship Lord Caitanya is by the method of chanting Hare Krishna."
Srila Prabhupada Letter to Satsvarupa, 06-16-68
"Therefore my Guru Maharaja did not approve the parties... They are called gauranga-nagari. They accept Caitanya Mahaprabhu as Krsna. Caitanya Mahaprabhu is Krsna, but they pose Him, "Krsna is enjoying with gopis." No, that is called gauranga-nagari-bhava. No. Krsna has appeared now as devotee. So you must help Him how He can become a best devotee. Not that pose Him into Krsna position."
Srila Prabhupada Lecture on Srimad-Bhagavatam, 10-17-72, Vrindaban
"'Sri Caitanya Mahaprabhu never even joked with others' wives. As soon as He saw a woman coming, He would immediately give her ample room to pass without talking.' He was extremely strict regarding the association of women. The sahajiyas, however, pose as followers of Sri Caitanya Mahaprabhu although they indulge in lusty affairs with women. In His youth Lord Caitanya was very humorous with everyone, but He never joked with any woman, nor in this incarnation did He talk about women. The gauranga-nagari party is not approved by Sri Caitanya Mahaprabhu or Vrndavana dasa Thakura. Even though one may offer all kinds of prayers to Caitanya Mahaprabhu, one should strictly avoid worshiping Him as the Gauranga Nagara. The personal behavior of Sri Caitanya Mahaprabhu and the verses written by Sri Vrndavana dasa Thakura have completely repudiated the lusty desires of the gauranga-nagaris."
Caitanya-caritamrta, Adi lila 12:2
Bhaktivedanta Book Trust. HDG A.C. Bhaktivedanta Swami Srila Prabhupada.