"Device is full" - 25+ gb free space, LG G2

[sodin89]

When I'm trying to syncronize my offline lists the phone says that my device is full and cannot syncronize anymore.

I've tried to find a way to chose which location to save offline lists, in case it was saving it all to an internal memory, without success.

And LG G2, that I'm currently using, has an internal memory of 32 GB and that's it - no space for external memory cards etc.

Kind of annoying to hear that the device is full when it's over 25 GB of free space!

Thankful for all the help I can get!