Receiving SEPA transfers is completely free, however, for now, your Deblock account can only hold Euros.
This means that if you receive a transfer in a different currency, let's say for example in US dollars, the US dollars will need to be exchanged for Euros before the funds hit your account. This exchange is automatic, immediate and it can involve a fee depending on your Deblock pricing plan.
If you definitely do not want to be charged for any incoming transfers please request the sender to send Euros and not any other currency.
Deblock will support additional currencies in the future, so you will be able to hold them in your account and exchange fees for inbound transfer will no longer apply.