How do you mean "limited"? I assume that you mean horizontally and not vertically.
Do you lose control at 500m or does the Anafi refuse to go any further. If the latter then you may have the geofence turned on.
I think you did the same as me today. seen the weather(less than 10mph winds) and didnt think the sub zero temp would be a problem(i live NW england). how wrong were we! i did manage to get the drone to launch but lost 8min of video!