I have the following SMS journey set up in zoho marketing hub (see attached). Each lead has a date for their trip with us (just a date, no time). I would like each lead to get an sms message 2 days before the trip, and one sms message the day after (I would have liked to send an SMS on the day of the trip in the evening - but I don't think that is possible.) 

For some reason, this journey is not working, and I am not able to send SMS messages. I do have another SMS campaign which is working fine, and sending messages. 

Any idea? 

Thanks