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Obi opens plex.tv in your browser and waits there for you to approve it. Sign in if Plex asks, then allow access; Obi carries on by itself. If you came back without approving, tap Open the Plex page again. If the code expired, start the sign-in again.

Obi shows the plex.tv address instead. Open it on another device (a computer will do), approve Obi there, and the phone carries on by itself. Tap Copy to send the address to yourself.

Obi lists the servers that belong to the Plex account you signed in with, and the ones other people shared with it. Check that your Plex Media Server is signed in to that account (in Plex's web app, under Settings, the server should show in your list), and that the music library is shared with you if the server is a friend's.

The server is off, asleep, or not reachable from where you are. At home, check that the phone is on the same network as the server. Away from home, the server needs Remote Access turned on in Plex's server settings, or Plex uses a slower relay. A VPN or a firewall on either side can block the connection. Obi tries every address Plex lists for the server and uses the best one that answers, so a server whose address changed is found again on its own.

Plex stopped accepting Obi's saved sign-in, for example after you revoked the device in your Plex account or changed your password. Tap Sign in in the banner and approve Obi again. Nothing is lost: your library, downloads and settings stay.

Type the whole address: https://music.example.com, or http://192.168.1.10:4533 for a server on your network. Include the port if your server uses one (Navidrome's is 4533 by default) and the folder if it lives under one (https://example.com/navidrome). Open the same address in your phone's browser: it should show the server's own page.

Use the username and password of a user on the server. If a reverse proxy in front of the server asks for its own login first, Obi can't use it: it sends the server's login, not the proxy's. Let the server's /rest path through the proxy without its login.

The server's HTTPS certificate comes from an authority your phone doesn't know, such as your own. Install that authority's certificate on the phone (Android's settings, Security, Encryption and credentials, Install a certificate, CA certificate); Obi trusts the certificates you install. A certificate from a public authority such as Let's Encrypt needs nothing.

Obi allows plain http for servers on your own network and for an address you typed yourself, and warns you: your password and your music then travel unencrypted. Use it only on a network you trust, or put the server behind HTTPS or a VPN.

Type the whole address, with https:// or http://, the port if there is one (Jellyfin's is 8096 by default) and any folder. Open it in your phone's browser to check that Jellyfin's page shows.

Quick Connect signs you in with a six-digit code instead of a password. Obi shows the code; enter it in another Jellyfin app you are signed in to, under Settings › Quick Connect. If Obi says "Quick Connect is turned off on this server", an administrator has to turn it on in Jellyfin's dashboard (under General), or you sign in with your password.

Obi holds one user per Jellyfin server. Add the server again with the other user, from Settings › Add Jellyfin server: it replaces the first. Each phone signs in on its own.

In Settings › Playback you can cap the quality Obi asks for, separately on Wi-Fi and on mobile data (by default Original on Wi-Fi and 192 kbps on mobile data). A lower cap needs your server to convert the music, which a weak server or a slow upload can't always keep up with.

Some phones close apps in the background to save battery. In Android's settings, open Apps › Obi › Battery and allow background use (the setting is called Unrestricted or Don't optimise, depending on the phone).

Open Settings, tap your server and choose Sync now to fetch what changed, or Resync library to fetch everything again and drop what the server no longer has. The first sync of a big library takes a while; it runs in the background with a notification and carries on where it stopped if it is interrupted.

Downloads use Wi-Fi only by default. Change it under Settings › Downloads. They also need Android to let Obi run in the background (see the battery tip above).

A station shows a song only if its stream or its web feed says what is playing. Covers come from the station, or from MusicBrainz and the Cover Art Archive when Look up covers online is on (Settings › Playback, under Internet radios).

Purchases are made and refunded through Google Play, and belong to your Google account. On a new phone or after reinstalling, sign in to the same Google account in Play and choose Restore purchase in Obi's settings, under Obi Pro. Refunds follow Google Play's rules: ask Google Play, or write to us and we will help.