The first error message - You're using the Cinema4D Renderer and this requires Dynamic Link AND also slows down your renders. Go to your Comp Settings to change the Renderer to Classic 3D.
The second error message - It looks like you've applied a time resampling effect to one of the clips that you've used as a Media Replacement Asset. This time resampling effect will not carry over into PPro.
Thank you Roland, though I am pretty sure I haven't applied any time resampling effect, but still will confirm soon here. Also, have tried changing C4D to 3D renderer before posting this error here.. so, I am not sure about that too if it can solve my problem. Will get back with another try.