I’ve never had a negative experience with any entity. I’m not sure if that’s because I don’t reach out to any unknowns or because I’m under the Angels’ protection. My understanding is that a harmful or dangerous connection like that has to be sought. Having said that, there are entities who don’t necessarily mean to harm, but they are not High Guides and don’t know enough to be helpful. I’ve only channeled loving beings, and they always bring a sense of peace with them.
Anyone can ask for protection from the Archangels, and I think that’s always a good idea. If something doesn’t feel right or comfortable, end the connection. As far as the board bringing evil, it’s just a board, a tool such as Tarot cards and pendulums. These things cannot be overtaken by evil without your permission or intent. There are no demons who are able and waiting to pounce on unsuspecting people. Trust your intuition.