Note, that to receive EPs for taking part in a presale, that presale must first be finalized. Additionaly, one wallet can only recieve a maximum of one EA reward of each type for a given presale. This means that if a user takes part in a presale by buying 25% of the possible max buy limit, and after some time decided to buy all the way up to limit in a separate transaction, then they will only receive one reward for the "Take part in a successful presale" EA once the presale is succesfull finalized. However, that user will also receive one reward for the "Max buy in a successful presale" EA granting them a total of 33 EPs (11 + 22).