My balance decreased. Why so?
Kryptex stores your funds in BTC only. The balance in dollars/euros/etc is calculated at the current bitcoin rate to the selected currency and is not precise. Let's say you have USD selected for your balance. Then its formula would be as follows:
[Your balance] * [BTC/USD exchange rate] = [Your display balance]
If the bitcoin rate increases - your balance in the currency increases. And vice versa.
You can always find the up-to-date BTC exchange rate at the balance section in the account.