Bulk email start date must be greate than current in the selected Time Zone - campaign error

Can anybody help me with this error message please?

I created a new campaign and upon saving I had this message.

There are marketing emails attached to the campaign. They were automatically assigned a start date (which I cannot edit) that is the same as the creation date. So it's in the past - could this be why I'm getting this message. All other fields are filled out and look correct.