1. Planted by British??
Regarding the charge that he flattered the British, attention might be drawn to some of his writings. For instance, he says:

Some ignorant people have raised the objection, among them the Editor of Al-Manar, that as I live in a country ruled by the British, I, therefore, forbid Jihad. These stupid ones do not consider that if I had wished to please the Government with false declarations, why should I have affirmed repeatedly that Jesus, son of Mary, was delivered from the cross and died a natural death in Srinagar and that he was neither God, nor Son of God. Would not such of the British who are devoted to their religion be disgusted by this affirmation of mine? Then attend to this, ye stupid ones, that I offer no flattery to this Government. The truth is that according to the Holy Quran, it is forbidden to go to war against a government which does not interfere in any way with Islam or its practice, nor uses force against us in order to promote its own religion. (Kishti Nuh, p.68)

He states further:

This Government safeguards the lives and the properties of the Muslims and provides them with security against the attack of every wrongdoer… I have not embarked upon this enterprise out of any fear of Government or in the hope of any reward from it. All I have done is in accordance with the divine command and the command of the Holy Prophet, peace and blessings of Allah be upon him. (Nurul Haq, Part I, p.30)

He also states:

I have never desired that I should mention my continuous services to government officials, for I consider it my duty to declare the truth, not out of my desire for any return or award. (Tableegh Risalat, Vol. VII, p. 10)

Another statement of his is:

I do not flatter the Government as some ignorant ones imagine because I desire a return from the Government. On the contrary, I consider it just and a duty on account of my faith to express gratitude to the Government. (Tableegh Risalat, Vol. X, p.123)

Thus, whenever he praised the British, it was not out of flattery but was out of obedience to the direction of the Holy Prophet, peace and blessings of Allah be upon him, that he who is not grateful to man is not grateful to Allah. To call a justice-loving government a just government is an Islamic quality and is not open to objection.
It is surprising that when the Promised Messiah, peace be on him, pointed out some of the good qualities of the British he was charged with flattering them, but when numberless Muslin divines, both those who were his contemporaries and those who came after him, praised the British in exaggerated terms, no one raised a voice against it. Is that Islamic justice?
We set out below, by way of illustration, some of the declarations of Muslim divines and leaders who described the British Government as a divine blessing.
(i) Maulvi Muhammad Hussain Sahib of Batala, who was one of the divines and leaders of the Ahle Hadees, wrote:

It is not permissible for Muslim subjects to fight, or to help with men and money those who fight, against a government, whether Christian, or Jewish, or of some other faith, under whom the Muslims carry out their religious duties and obligations freely. For the Muslims of India it is forbidden to oppose or rebel against the British Government. (Ishaatus Sunnah, Vol. VI, No. 10)

He has also stated:

Brethren, this is not the time of the sword; at this time it has become necessary to use the pen in place of the sword. (Ishaatus Sunnah, Vol. VI, No.12)

(ii) Syed Ali-al-Hairi Sahib, the well-known Shia mujtahid, has stated:

We take pride in being subject to a Government under which justice and religious freedom are the law, the equal of which is not to be found in any other government of the world. Therefore, I declare that in return for this beneficence every Shia should be grateful to the British Government with a sincere heart and appreciate its beneficence. (Mauiza Tahreef Quran, April 1923)

(iii) Hazrat Syed Sahib Brelvi declared:

Our true purpose is the propagation of the Unity of God and the revival of the practice of the Chiefs of the Prophets, and that we carry out without hindrance in this country. Then why should we fight the British Government and shed the blood of both sides contrary to the principles of our religion. (Biography of Hazrat Syed Ahmed by Maulana Muhammad Jaafar Thanesar)