Question:
Is an Ashkenazi allowed to daven Yom Kippur services at a shul that davens a different nusach, specifically if an Ashkenazi is going to daven at Chabad?
Answer:
It is better for one to daven with thier nusach, but one is allowed to daven in a shul that davens a differant nusach. When davening Shemona Esrei etc., you should daven according to your nusach.
Have a kesiva v'chasima tova
Sources:
