I tried with several accounts and budgets and wasn't able to reproduce the problem. Could you send me your file please ?

Could you send me your file at cyril.anger@lyricapps.fr so that I can correct this quickly ?

This will be corrected in upcoming 3.3.

Still waiting for Apple validation...

It updates the currencies by getting their latest change rates on Google.
This might be broken in iCompta 3.2.1 but it will be fixed in upcoming 3.3.

Yes it will be fixed in upcoming 3.3.

Version 2, in a few months...

Use MM/dd/yy instead.

Thanks for your suggestions, by the way the shortcut to add a new transaction is Command + Alt + N.

Sure, this is planned in version 4.