I am running the latest version of El Captain, on a 2015 iMAC. My iTunes library is on my Synology NAS. I am using an ASUS RT3100 router. Over the last month, I keep getting these random popup's. "We could not complete your iTunes Store Request. The network connect timed out." This happens daily. My internet works fine, and I am not loosing connections. I've even reinstalled (Downloaded again the latests 12.4 iTunes) and it still happens. How do I fix this?