I have been trying to book a return ferry from Istanbul yenikapi ferry terminal to bursa and back.
I know a small amount of Turkish so can read both the Turkish version and the English version.
both versions will not continue to the final checkout page, the page jumps back up to the last section with no error message in English or Turkish. the site seems to be asking for a TCN Number.
is it a Turkish citizen number they require before proceeding or is it a Ticket number. 'TCN NUMBER" it says in the box on the online form