The number
The line is open Mon-Sun, 24 hours. Most messages come back inside fifteen minutes, and the small hours are no different from the middle of the afternoon. A person writes those replies rather than a machine, which has one honest consequence: while somebody is being walked through a Firestick two time zones away, your message waits a few minutes for its turn. A new login goes out in under 15 minutes once payment has gone through, in that same thread, where you can find it again from the sofa.
There is no ticket number to quote, no queue position, and no public email address on this site. Tapping the number opens a chat with a first line already written; delete it and say whatever you actually came to say.
Three things to say first
What the screen is, and what is on it. The make of the television, stick or box, and the name of the app if one is installed. Those two facts decide roughly half of every answer given here.
A photograph rather than a description. If something is refusing to work, point your phone at the television and send the picture. Error wording differs between apps by a word or two, and that word is usually the whole diagnosis. A photograph settles in one message what a description takes five to establish.
Whether anything changed since it last worked. A setting you altered, an app that updated itself, a new router, a different room. If a change caused it, saying so turns the conversation into a reversal rather than an investigation, and most of those are undone in under a minute.
Written down already
Plenty of what arrives here is answered on this site in more detail than a chat window comfortably carries, and reading it costs you no waiting at all. Setup trouble on a particular screen is covered in the guide for that device, menu by menu. If you want to see the service before paying anything, start on the free trial page. If you have decided already, the buttons on the pricing page open the chat with the term and the number of screens filled in, so nothing has to be described twice. Rights holders and anyone acting for them should start at the DMCA page: it identifies the agent appointed to receive notices and sets out the elements one needs to carry.