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Tracks synced for offline playback get unsynced.
First of all, I am very sorry that this bug has reared its ugly head again. Clearly we didn't intend for this to happen.
Tracks might get re-synched as soon as you go online again.
When this bug previously occurred it seemed to only affect newer playlist additions
Please provide this information so we can investigate again:
I load Spotify on my mobile device one day and firstly was greeted by the Login/Sign Up page. After logging in, ALL the tracked are wiped from the phone. This has been at least the 6th time it has happened.
After much comminication with the spotify team the following solution has worked for me:
This worked for me, the app does not save to my SD card anymore but I have a reasonable amount of device memory so this isn't too much of a problem.
The app has been stable for a couple of months, entering and exiting offline mode. Due to memory limitaitions I can't sync anything close to maximum permitted number of tracks but I can sync more than enough for general needs.
It's not immediately obvious how to contact a person at spotify directly, but if you work through the FAQs there is eventually a form to send a direct request. The people I dealt with were incredilby helpful, the advice was little repetative but I think they were making subtle changes to my account settings in the background.
Spotify - I think I have found a way for you to replicate this.
It also accounts for other fixes like PeteyG_UK's above.
I have a 64gb Sandisk SD card and a 32gb SD card. The 64gb card would occassionally disconnect (unmount) and reconnect (mount) all by itself. I could see this happening in android notifications. It didn't happen often, and it usually reconnected easily, so it wasn't much of an issue - for everything except Spotify. It seems when it disconnected and reconnected - that's when the Offline library would disappear. Note the files weren't touched - just for some reason Spotify didn't know they were there anymore. The Sandisk card apparently suffers from this problem - see here http://forums.androidcentral.com/samsung-galaxy-note-4/453356-why-my-64-gig-sd-card-unmounting-mount... (and others on the web)
When I swapped out to the 32gb card all my offline songs have remained offline - for over a month now which is far longer than it ever lasted on the 64gb card. Rock solid. I tried uninstalling, re-installing and all that crap and none of those things fixed the problem more than temporarily. Swapping out the seemingly faulty SD card did fix the issue.
So it seems there is an issue with Spotify not picking up the offline files when you unmount and remount an SD card. I imagine that should be very easy to replicate, test and FIX.
I have left Spotify 1-2 times because of this problem. I came back for web listening, on a family plan with my girlfriend. But I'm thinking of canceling again, because inevitably I'd like to sync music to my Android, but the same problem keeps happening.
As others here report, the following happens:
1) Music I "Save" will later appear as not saved at all.
2) Music I Sync/Download to my phone will disappear, usually as soon as I "Go Offline"
I have a Nexus 6, running the stock OS, up to date.
This has been happening for a couple months, when I have the courage to try the app again. I recall it happening as long as a year ago, too, when I used to subscribe on my own.
I have tried the steps suggested by PeteyG_UK on 01-08-2015 11:08 AM -- no result. Or rather, the exact same behavior as before.
I am tech savvy and willing to perform steps and collect logs if Spotify would like assistance troubleshooting this problem. Assuming the app is capable of logging and error reporting...
I also have this issue with my HTC One M8 with all latest Android OS and Spotify app updates installed.
Its been a problem for months with several different Spotify versions.
Songs wont stay "green arrowed" in offline mode. That is, some are but random songs in several playlists gets greyed out after 1-2 days. I then need to go online to resync for offline playing.
And just to be clear, the songs are NOT removed from Spotify, they all come back in my playlists once I go online again.