I’ve checked with my team support about this issue. John Deer University does not work well in Chrome. I think that you are using Chrome for their internet browser
Note : Plus, the red “x” in the upper right corner if the DTC’s screen shot shows that pop-ups are being blocked. The Delegator page is considered a pop-up.
Please use Internet Explorer or Mozilla Firefox for their internet browser when using John Deere University.
If you have any questions, please let me know