Why sometimes when i getting a key man is stopping to walk into the door

If you are talking about the fact that it stops when you open the door, then at level 9 you need to wait and then go in, and at level 10 take the key and let the guest out If you are talking about the fact that he does not move like in level 9, then just re-enter the game And if you're not talking about it, then I don't know how to help you.

That's because in Level 9, you moved to much...

That's why he tried to go throught that door in Level 10...

When playing Level 9, You have to stop in just 5-7 seconds and go get that key...

When you're in Level 10, You now have some time to get that key on the top right, because your "Guest from Level 9" is just standing there for like 5-7 seconds before going to the next level.