Just to echo others, I would personally question if you got the right entity, and try evoking again. I don’t personally use other entities to verify entities- but if you’re not sure your discernment is top notch that is a fine way to go. I don’t use circles but I do banish/shield and ward my home and self. Another option, if your communication is not crystal clear with the trusted entities, is a servitor I created to aid with this. I’ll link it for you, she banishes, wards and will ensure you only get the entities you intend to get, if you evoke her prior to evoking anything else.
The only caution I have is to be clear your intention is to evoke the real Paimon, and not necessarily the one you got previously. If you intend to evoke the entity you previously were unsure of, she will assume that is the one you intend to get and allow it to enter your space, but if you intend to evoke the true Paimon, she won’t let anything else enter your space, including whoever it was, if you were mislead originally.