The term jehovah is NOT the name of God nor is it a tranlation or tranliteration of the tetragrammaton YHWH.
That has been discussed ad nauseum, it is a "hybrid" term using YHWH and the vowels of either Adonai (Lord) or Elohim ( God) depending on the situation, that is a fact.
Allah is alo not the name of God but the arabic term for God or the arabic rendering of "elohim".
Jehovah is still used by some because they want to be "recognised" as worshipping the God of the Old Covenant, arguably a slap in the face of said God since God found it necessary to create a NEW Covenant with his son Jesus as Lord and Saviour.
Worshipping "Jehovah" is NOT worshipping a false God, its just denying the place of Jesus and the existence of the New Covenant.
Jesus taught us how to pray, in his OWN WORDS, "Our Father...", you'd think that would be ENOUGH for some people.
*shakes head*