Why He Was Not Allowed To Enter The Gate Of Tashi Lhunpo Cave?

Shugden followers assert that he is a Dharma protector who appeared for the sole purpose of protecting Gelug doctrine. He has the blessing and the recommendation of Tsongkapa. If that is true, why was he not allowed to enter the gate of Tashi Lhunpo monastery? Secondly, he speaks through a human medium. He said to His Holiness the 14th Dalai Lama at Dromo Dhungkar Monastery in 1951 he came directly from the pure land of Lama Tsonkapa. Kyabje Pabongka also wrote it in the Life entrustment ritual that he is the one who comes from the pure land of Je Tsonkapa. If it is so easy for him to go directly to the heavenly abode of Lama Tsonkapa as he pleases, then how come that he could not enter Tashi Lhunpo monastery where there is no restriction
They say that Gelukpa can only practise the teaching of Gelukpa School. Doegyal will punish any Gelukpa, who is interested in Nyingma teaching. Kyabje Pabongka Rinpoche used to practise Nyingma teaching in the early part of his life. One day, while he was taking the initiation called “Excellent Vase fulfilling wishes” (Doejoe bum sang), he saw a terrifying big red hand sticking in towards him from the window of his residence. It shocked him to such an extent that he immediately stopped showing interest in Nyingma teaching. In Trijang Rinpoche´s “Music Delighting the Ocean of protectors” he wrote, “ whether they were lords of Tibet, great lamas who held the political power of the throne, lamas and tulkus, great or small, with illustrious lines of incarnation, holy beings rich in scriptural and realized qualities, high lords of vast lands and works, those haughty with pride of family lineage, dominion and wealth, any who hypocritically claimed to be followers of Protector Manjusri Tsongkhapa’s Teachings while remaining unsatisfied with Je Lama’s precious Teachings of Sutra and Tantra which, in terms of view, meditation, and action, need not crave more from any other tradition, and, instead, mixed, polluted, or confused them with other modes of view and practice, whether lay or ordained, regardless of status, there have been many who have met with unpleasant wrathful punishments, such as
It proves beyond doubt that Shugden is a fierce vengeful spirit. Why target only the famous gelugpa lamas and Officials who practised Nyingma teaching? Why he holds such a strong grudge against Nyingma teaching? Is it directly related to the performance of the extensive Fire ritual in