Nov 8, 2018, 17:3111/08/18
This is probably a known bug. Do this: go to edit mode and move each of your distilleries to a different position. You'll likely discover that your sixth distillery is already there, but was overlapped by one of the remaining five (and is likely level 1 or something similarly low, so you'll need to upgrade it).
If that doesn't help, please provide your ID (Help window, bottom left; just click and paste here).