# The trader does not make any purchases, what goes wrong?

With the BBT strategy, the trader works according to a fixed format: purchase only at the start of the upward trend, provided there is no other trade within a certain bandwidth (1.5%) and there is sufficient balance (€ 50) on the euro account in the exchange. (There must be **Euros** in your account!)

During the price rise, the BBT strategy does not make any purchases.

If there is **not enough euro** balance (minimum € 50) available on your exchange account, the trader cannot make purchases.

It is also possible that you do not have any credits, that you have **not linked the API** or that you have set **too large a reserved amount**. (in short: there is no euro balance available)

If the trader does not make a purchase, one of these criteria is not met.