One of the largest cryptocurrency exchanges reported about stop of new users registrations.
We have turned off user registration for a DB upgrade due to a large spike in new user sign ups.
— Bittrex (@BittrexExchange) 14 декабря 2017 г.
Users report about issues with deposits.
Dude they tie up every damn deposit I make for over 24 hrs.
— Free Mrkt Crypto (FMC) (@freemrktcrypto) 14 декабря 2017 г.
Before the registration issues, Bittrex reported on issues with Ripple transactions and asked users to be patient.
PSA: please be patient with $XRP withdrawals. We have to send those in a serialized manner and are doing 5-6 withdrawals a minute; much slower rate than withdraw requests. Please do not resubmit, and if possible, batch to larger withdraw sizes @BittrexExchange
— Richie (@richiela) 14 декабря 2017 г.
This news came along with huge Ripple price spikes last few days.
Ripple Price Charts
As you can see on the chart, Ripple gained almost 50% in las 24h and more than 225% in last week. As we understand, huge price jump always comes with large amount of people, trying to earn some money on it. So, we can assume that big amount of new registration caused some technical issues to Bittrex.