I think the concern over the online wallet is warranted. I would never be comfortable not having my private keys, so I moved my coins off into a paper wallet and some into a CLI hotwallet. The CLI wallet is available on github but they don't advertise the fact, presumably because it isn't user friendly enough for the target audience.
I'd really like to see an official desktop GUI wallet. Not sure if they are working on it, but right now that single point of failure is a little worrying, nothing is unbreakable and a serious hack there would probably kill the coin.
I would like to get my funds off of cryptopia incase they could potentially get hacked, transferred half my coins to my ETN wallet, and ever since haven't showed up. At least the wallet won't update the balance, so I don't know if they are there or not, but I just don't feel too comfortable leaving them on Cryptopia. Support tickets have not been answered yet.
I've been seeing this ever since the 14th and it's becoming a little concerning.
https://ibb.co/dknW5RI know this doesn't help with your problem right now, but in future I would highly recommend the CLI wallet if you are comfortable using it. It's not that hard to get to grips with and it's really fast and light weight. You can find it on the ETN github here: