Include the device, app and connection
Provide the device brand and model when known, such as Samsung TV, LG TV, Android TV, Apple TV or mobile. Add the app or browser being used. Menu names and available functions vary between models, so these details make setup instructions more precise.
Say whether the device uses Wi-Fi or Ethernet and whether the same problem appears on another device. For buffering, download speed, ping and jitter are useful. Never send passwords or other secret account details in a normal support message.