got banned while abusing too much for about 2 hour, i don't think its different even you play safe, anyway drop mult are dangerous, and high damage too
but i think you can abuse drop by receive first much gems to do 900x, and you will receive repeat quest purchasing gems and activate them and enjoy much gems, after that maybe you can lay low by not login or not using any mods for few day i think, im not sure, their security is tight.