Music and Videos keep getting deleted, yet I can't delete purchased music
For the past 3 days I've been battling with iTunes. For some reason my music keeps getting deleted off of my phone now. When it does, only the ones on my music list that were purchased stay and for some reason I can't delete THOSE. They stick and stay. I don't know why itunes is suddenly making me keep my purchased music without the ability to delete and I can't keep my music. I've re input my music twice and they still keep getting deleted. Videos too. Here are my problems.
1. For some reason, ALL the videos and music I had on my iphone keep getting deleted. They still show up on my itunes list though, just not on my phone. It's so weird. All the music is still RIGHT THERE on my itunes on my PC when I look but they disappear on my iphone completely so I have to keep putting the music back on.
2. The Artwork that I put manually into the songs doesn't show up. I mean when I actually play the song it shows up when it plays but when you exit back from that screen it doesn't show. It just shows a blank gray box. And the box next to the artist's name is not any artwork. It just says the artist's name diagonally from left to right upwards like there's no artwork. Some of the artwork doesn't appear no matter how many times I insert it manually.
3. Purchased music I CANNOT delete. iTunes doesn't even give me the option anymore. So for some reason, even if I delete everything left on the itunes that shows up there but not on my phone, it won't allow me to delete what's purchased on my iphone. I want to get rid of some of it.
I've tried unsynching on my itunes and still it doesn't help and the artwork still doesn't show up. The ability to delete still doesn't show for purchased items. This is weird it's like since the latest update to itunes maybe this started happening. That's the soonest I think I can notice when.
I run Windows 8.1
iTunes 12.1
iOS 8.2
Help please!
iPhone 5s, iOS 8.2