That is correct. Many of the exchanges that serve as a place to hold your crypto or fiat as well as to make trades have intermittent service based on the huge influx of traffic going to these platforms.
If you want to store your crypto, here are some other suggestions. Some are software based (hot wallet), some are hardware based (cold wallets):
KeepKey – Hardware Wallet. The coolest looking tech gadget to show off to your friends.
Nano Ledger S – Hardware Wallet.
Trezor – Hardware Wallet.
MyEtherWallet – Paper Wallet.
Electrum – Software Wallet.
If you are interested in trading and holding your crypto, here are a few exchanges to consider:
Kraken
Bittrex
Gdax
Binance
Bitstamp
I hope this answers your questions. If not, please feel free to contact us with any further questions or concerns.