As I said, if you’re right, you’ve nothing to worry about it.
Once again, Acts 5 comes highly recommended.
Gameliel’s admonition was in regard to the gospel being preached being of God. Mormonism is satanic in origin, spewed from a divination peepstone conman, so the application of the passage is specious at best. You cultist want to be taken as the ONLY Christianity with authority from God. That shows you are of your father the devil. Try another verse.