Hi. Thank you for the additional information.
I visited the front-end of your site and tested the Search Events button in the “Tribe Bar” (above the Event List view).
(Please note that we do not login to wp-admin for our customers’ sites so I deleted those credentials from your private reply. Please don’t provide them again in the future.)
I noticed changing the date doesn’t even require you to click the Search Events button because it automatically updates via Ajax. If you enter a search term or location search, you then need to click Search Events, but clicking the button doesn’t do anything.
However, this isn’t the way it works on my local testing site. As such, please follow our testing for conflicts guide and see if that helps narrow down the cause of this.
Let us know what you find out.
Thanks.