If youre using a VPN hundreds of people could be playing on same IP.
More than one player on same IP could just be someone else playing on your network. Friend or family member or someone within the same company. I highly doubt that it would raise any alarm flags. Ive had one ban while other account is safe.
With this being said I still gotta admit I am using one IP for each bot. But if Im playing manually I just use same IP.