I'm using AWS EC2 C4-XLarge (Qty=2) for solo-mining and have gotten 3 blocks in the last 12 hours, however, when I started, the nethash was only 75 Kh/s, now it's 250 Kh/s. I'm thinking of deploying 2 more, it's kinda fun to get blocks ~175 wownero's all yours in the wallet 
how many hashes did u get on AWS... the 3 blocks you found were way past where i started mining in pool at blockheight ~280?
just curious---
_my payments and balance on wowne.ro are all failzored too - hope the balances will be honored_
1.02Kh/s each instance. I deployed 2 more AWS instances but have not gotten a block, yet. Current block is 554
i see, my r7 240 only ever got 100H/s - free azure runs stable at 53H/s
solo mining made no sense for me even early on