Our Contact 7 Form stopped working?

I am hoping you might find a few minutes to help me with an issue that’s occurred.

I updated tons of plugins, etc etc for the site as it’d not been done in at least a year…for a new client site…using Nice Hotel theme…at http://www.torontoapartmentsfurnished.com….

And what has happened is that the Inquire form is not now working properly? the little boxy form along the left hand side of the slideshow is what’s ‘broken’

Let me explain…

The Inquire form is running under a plugin called Contact 7 (http://contactform7.com/) and it’s the most recent version.

It “appears” that there is another plugin called – JQuery Validation For Contact Form 7 – that is now deactivated, but that it ‘helps’ the Contact 7 Inquire form with JavaScript. I really don’t know if that’s true?

But I had to deactivate same, as when it’s turned on – it kills the sites big slider up top and we can’t have that.

Further to my own non-understanding is the deactivated plugin called – gravity forms – which appears to also be important (?) to the Contact 7 Inquire form – but we do not have an updated version or licence for that one.

Can you see what I mean here? I send an email using the form on our Contact Us page and it runs perfectly…but when I send on using the Inquire form – it only ‘sometimes goes thru…i.e. it’s not always on or off.

Can you help here? If you can it’d be much appreciated.or if you’ve a pointer to someone else who can? or a forum? I’m already asking at WP itself, and every forum for all of these plugins too..

this is SO confusing….

https://wordpress.org/plugins/contact-form-7/