Feel free to contact us each and every time. Really. We´re trying to keep up a 24 hour-response time.
In any case - Please have a look at our Documentaries, Forums, Helpdesk and any other option available first before getting in contact.
Really, we´ll try to respond ASAP anyway, but "if the worst comes to the worst", we´re just going to focus on the most important cases and attend to those people first who can clearly tell us what they already tried and what precisely didn´t work out as expected.