The Yehovas Witnesses group is about “The Tetragrammon”, in The Bible, which they claim is about Yehova. Furtermore they say “they have witnesses the truth of this”, which the tetragrammon may also be about.
As a symbol it seems to refer a concept of The Giad that is lost, and that it needs to be without Elf (Shaytan).
Yehova tries to be this.
And that it may be the block-script Hebrew Ja no longer worked for them, due to a script change from paleo-hebrew to block-script hebrew.
They have a non-trinitarian interpretation of The Bible. However if one is interested in correct interpretation of The Bible, ofcouse The Kuran corrects The Bible.
Block-script hebrew seems to support the form אי (Ja) but then you are a devoté writing block-script hebrew.