Three channels, in order of speed for most issues:
1. Knowledge Base (instant)
You're in it — most answers are here. Search above.
2. Support tickets (hours)
Dashboard → Support → New Ticket. Include the site name and what you already tried; screenshots help. Median first response: under 2 hours.
3. Priority support
Professional and Enterprise plans get priority queueing — urgent production issues jump the line. Enterprise adds a dedicated account manager.