Gantt chart in Confluence macro - start/end dates & date labels not working

[AmyG]

Using the information here: https://confluence.atlassian.com/doc/chart-macro-163415075.html 

I created the attached gnatt chart. 

I keep getting "Requires end >= start." if the dates are in the same year.  A year out it works, but the date headings are nonsense.  

• How do I get the dates to work in the same year without being told the end date needs to be greater than or equal to the start date (it is).
• How do I get the date columns at the top to be accurate?  
• It would be great if you could give exacts to put in the parameters.  I read through the Atlassian documentation, entered dates where I thought it made sense, and got the same results. 

Many, many, many thanks in advance.  

[ANki]

Edit the Gantt chart settings Date to reflect capital letters for month - MM/dd/yyyy. This resolved the error for me.

[Reg Hawkins]

Check you date format 

[Andrey Khaneev _StiltSoft_]

As a workatound you can try Chart from Table Gantt chart if you have Table Filter and Charts add-on installed.

[AmyG]

I don't have the permissions to download any add-ons and the admis aren't likely to pay for it.   Any idea how to get the out-of-the-box gnatt chart macro working as illustrated?   Using Atlassian's documenation it doesn't render as expected (unusable).  Any input is aprreciated!