Is it wrong for. Roman Catholic to say an akathist prayer from the Eastern Orthodox Church?
Unless the prayer itself is somehow heretical, no. And it’s almost certainly not if it’s Orthodox.
Well, since Eastern Catholics pray it, not sure why it would be (I have it downloaded on my computer as PDF).
There is a plenary indulgence associated with the Akathistos hymn. See Grant No. 23:
What a treasure! Thank you!!!
Not at all! It’s a beautiful prayer.
I prefer the Akathist Hymn to praying the Rosary and I am part of the Western Church.
No, of course not.
But if it bothers you, you can think of it as a prayer from an Eastern Catholic Church, which it is, of course.