Pretty much all major Crypto exchanges can't handle the user growth the are experiencing. Continuous server downtimes as well as long waiting times for verification are the resulting issues. It shows, that there is still a ton of money on the sidelines that wants to get in. This is why even after a big 2017 in terms of gains, I am still very bullish on Crypto. May 2018 be even better!! (THIS IS NOT FINANCIAL ADVICE)