Is ABAKO no longer an active political party?

The Alliance of Bakongo (French: Alliance des Bakongo, or ABAKO) was a Congolese political party, founded by Edmond Nzeza Nlandu, but headed by Joseph Kasa-Vubu, which emerged in the late 1950s as vocal opponent of Belgian colonial rule in what today is the Democratic Republic of the Congo. Additionally, the organization served as the major ethno-religious organization for the Kongo people (also known as Bakongo) and became closely intertwined with the Kimbanguist Church which was extremely popular in the lower Congo.

Correct, The Alliance of Bakongo, or ABAKO, is no longer a political party.