I'll try to answer your question, sorry if it doesn't satisfy you. To briefly answer your question, mostly taxes and autonomy

By 1878 after the Russo-Turkish War, ‘Albania’ denoted a region inhabited by ethnic Albanians, predominantly Muslim, but also Catholic and Orthodox consisting of territory falling within the provinces of Shkoder, Kosovo, Monastir and Ioannina. Since the loyalty of the Albanians had long been taken for granted, little consideration had been given to their inclinations for autonomy during the administrative reorganizations made earlier in the 19th century to accommodate the more militantly nationalist Greeks, Serbs and Bulgarians. On 10 June 1878, three days before the Congress of Berlin, a number of activists formed the ‘Albanian League’ to protest against the possibility of Albanian-populated territories being occupied by a foreign power. At first the activists won support in Istanbul, as their interests aligned, but the Porte giving in to Austrian, Greek, and Montenegrin territorial demands and the League's request for more autonomy put the League and the Porte at odds. When the time came for implementation of the clauses of Berlin treaty, which did indeed include forfeit of Ottoman land in the Albanian provinces, an armed uprising broke out over a wide area and by September 1881 had been put down by the Sultan’s army whor estored order. The League was then disbanded after three years of activity.

Even though the league could not accomplish its goals, it did usher started a period of national revival. Albanian organizations were founded in cities, and they were primarily engaged in distributing Albanian publications and opening Albanian schools. Though many Albanians, especially the Muslims and Catholic Fandi supported Sultan Abdülhamid who they view protected their privileges, their loyalty slowly became more antagonistic in the course of the disintegration of the original privileges, as well as during the coming to power of the Young Turks. Already in 1903, Ottoman authorities closed Albanian schools, banned Albanian publications, and introduced new taxes. The majority of the Albanian political leaders strove for autonomy whereas a few minority favoured independence

The Young Turk revolution encouraged further Albanian movement. During the first ten months of the revolution, sixty-six Albanian cultural and political clubs were formed for the defence of Albanian rights. Apart from this nationalist element, there were also ‘traditionalists’ who demanded that their privileges from the days of Abdülhamid be maintained. Most Albanians disliked centralization and the modernization of the administration because this meant that they would have to pay more taxes and be liable for conscription like all Ottomans, while also surrendering their arms. The announcement of a census was seen as a threat to Albanian privileges and a prelude to obligatory military service. When the governor ordered in June 1909 that a record book of property be kept to serve as a basis for taxation, that led to rebellion. The central government in Istanbul began to institute a policy of repression. The rebels responded by forming a union to oppose the Young Turk regime, which they believed wanted to suppress their "age-old rights and traditions". In the Albanian province the opposition to centralization soon became even more militant. In early April 1909 a revolt broke out in the İpek region, forcing the Porte to declare martial law. The local population demanded the official usage of Albanian language and oppose the "octroi" tax levied on goods brought into Albanian towns. Negotiations led to a temporary suspension of hostilities. İsmail Kemal, the Albanian deputy for Vlora and a spokesman for Albanian autonomy, defended the rebels, arguing that they were not reactionaries. But he pointed out that they did not appreciate a constitution because the new regime had brought no benefits to the province. On April 26 a party of Albanian deputies visited the grand vizier and urged the government to dispatch a special mission with a view to ending the fighting. But Kamil Pasha declined, declaring that such an act would be seen as a sign of weakness. By the end of April what had seemed like a minor skirmish had developed into a full-fledged rebellion, which generally lasted to the Balkan Wars

Sources:

Osman's Dreams by Caroline Finkel

The Young Turks and The Ottoman nationalities by Feroz Ahmad