I didn't see a response here, but wanted to send the following information before I take a break for the evening.
I have a link below to a video that shows the "setup" of a very similar system to the one you have (assuming WS-2812). This video show MOST of the setup - including possible sensors - AND shows how you can use the buttons to set the date and time - starting at about the 2:20 mark in the video.
Click Here for video --> https://www.youtube.com/watch?v=7DVnoXP_er8
Please give that video a look, and then try the same steps to try and set the date and time on the system.
I also have a link to the electronic (PDF) version of the manual for you below - in case you don't have one handy.
Click here for manual --> http://www.lacrossetechnology.com/media/catalog/product/w/s/ws-2812u-it_1.pdf
Please let me know if you have any more questions.
If this has helped answer your question(s), please take a moment to rate MY service level (5-star is my goal) so that I get credit for my time helping you with this question.
You should see some "stars" (and SUBMIT button) to do that, but please let me know if you do NOT see them (you may have to REFRESH your screen) or can not use them.
Thanks, ***** *****