A cat, even an adult cat, may take a while to decide that a new environment and new people are safe. Some are braver than others when meeting new people, and moving may make them skittish until they figure out where the bounds of their new territory are.
When my most recent pair arrived, they promptly found a safe "den" under the guest room bed, and I barely saw them for the first week. I left them alone and let them explore at their own pace. After the first week, I would see Harry during the daytime, and he started watching me; toward the end of the week he started getting comfortable with me petting him briefly or trailing a string for him. The next week Harry vanished again and it was Hazel's turn to take the daytime watch-the-human shift.
After that I saw them frequently, but even so they initially preferred to sit just out of reach. The distance progressively got shorter, and I was able to okay with them with a string or get them to come over for petting. It took a month or two before they were ready to cuddle, and another two months to convince them it was ok to sit on my lap. But after a year they were as affectionate and cuddly with me as any cats I've known,
Respect the cat's need to make up its own mind about the house and about you. Think about how you'd feel if giant apes grabbed you and moved you to a new place, even if you knew that other giant apes had been friendly.