I have checked on the dev website, and they said that they removed interpolate, and that broke the shop in one of my games, so what would I use as a substitute for interpolate?
HEY!! ITS YOU AGAIN!!!!! Anyways, Interpolate isn't removed, instead it is edited to stop working its current code ever since new code was posted, (as said in a thread...) ANyWAYS!!! We could always use tween info and camera.CoordinateFrame or CFrame to fix this: Here are a couple of posts that might interest you / help you.
Oh by the way, I normally use lerp.
camera.CFrame = camera.CFrame:lerp(stuff)
You can also try this but it isn't a good example:
local a = 100 repeat wait(.1) a = a - 1 camera.CFrame = camera.CFrame + CFrame.new(0,0,1) until a < 1
Here is another method you can use: