POE2: Where is the Ingame Currency exchange?

Hi,

Im currently in Act3, Where is the Ingame Currency exchange?

Thanks in advance.

"Players can only access the Currency Exchange after completing Acts 1 to 3 and start playing Act 1 on Cruel difficulty"

passed all 6 acts, currency exchange is not available, there is no option in the dialogue

Not use it myself but I found this in the PoE2Wiki:

"The Currency Exchange is available in Act 4 through Finn, at least after defeating Lachlann."

Just spoke to him and he has a "Currency Exchange" dialog option at this point in the campaign.