My phone is a BLU vivo 5r and I had it for about a month now. And just a couple days ago, it's starting to act weird with charging. I went through 6 charger cords and it won't charge properly. Right now it's at 20% and its plugged in. It's been at 20% for about two hours now. It's not charging. I have never had a issue like this and I'm not sure what to do. Any answers please?