I've successfully gotten some useful cruise information from other users using the "messages" function of the app. Last week I received a message from a user I'd never spoken to in any forum/post/discussion and who is also not in my upcoming sailing. I gave the user the benefit of the doubt thinking they may have a question I could answer about a previous cruise I've taken. It became clear this was not their intention and I would like to prevent this person from continuing to message me. I tried using the "block user" function within the app but I am still receiving their messages. Anyone else having this problem?