Calendar Invites

We are using Zoom Meetings for a small training. The two trainers received calendar invites that were dated a month earlier than the event. I’ve double checked all dates on the setup and it all is for the correct date in March. The invite I received as one of the trainers is correct. My two trainers each received a calendar invite for the wrong date (instead of march it is for february). Is this a glitch in my zoom account or in my internal email/calendar at work? 

Also - now that they have removed the incorrect invite, I’d like to send a new invite to them. How can I do that?