Instabook not working

I have been notified by my clients of a problem on our instabook page - they can not book. I have added a screenshot of the error message.

Please could look into this, as this is proving to be problem for myself and customers.

Many thanks,

Code: 1616791347885x300837845187022400

Hey Laurie,

Thank you for dropping us a note about this and I’m so sorry.

I’ve replied to your email you sent to as I need a bit more information to diagnose.

Apologies once again and I’m sure we can resolve this quickly and take a look at making sure it doesn’t happen again.

Best wishes,