For any questions on how to use picu and/or our add-ons, please refer to the documentation.
Concerning the free picu plugin you might also want to check out the WordPress.org support forum. Feel free to ask your question there, as others might learn from your question – and hopefully our answer.
For any pre-sale questions, questions/concerns about your account and/or purchase(es), please send an email to firstname.lastname@example.org. (We usually answer emails during regular office ours, approx. 09:00 to 17:00 CET.)
We are also active on Twitter @picu_io. Feel free to message us there as well. (This is probably the fastest way to get a hold of us.)