WuTizen configurator

Settings are encrypted in this browser with a key derived from the pairing code. The server only stores ciphertext.

Emby server
Stremio add-ons (one URL per line)
WuPlay profile export (JSON, optional)
Preferences

Start the pairing on the TV (Settings → Web Configurator), type the code shown there, press Join, then compare the two short codes and press OK on the TV. The TV applies the settings only after you press Apply.