[EDIT] I've read only the thread's 1st page. ****

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You are moving a bit far away from the base addresses of the players on the screen. The offsets in the memory cannot be bigger then 0xFF.. (unless there is few exception eg. to the skillID). So there is no 0x2D4 offset to the coordinates (it can be correct 1 or 2 times, but it will fail after you restart your client few times).
0xE4 to the name is correct
Help: finding the correct base address to the player/monster names you must get a level 4 pointer