Can’t Choose Calendar Date

Hello Support. Client calendar all of a sudden stopped working on front end. Her clients are unable to choose an available date from the front end. Nothing has changed here. I checked all back end settings and her available times and dates DO show up there just fine. Front end, the issue is that no one can choose a date anymore. I upgraded her php version, deactivated all plugins one by one and reactivated, cleared cache several times. Still can’t get her calendar to function from the front end. I cannot identify the issue. Again, nothing has changed here. Calendar stopped functioning from front end all of a sudden. Can you assist? URL is https://www.asksmokey.com Thank you.

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