W3 Total Cache & Contact form 7 Nonce Issue

Hi,
I have been racking my head with an issue a few days and am hoping someone can help. I have a quick contact form set up on a page. It was working fine until I installed w3 Total Cache. Now whenever the form is submitted I get the orange box error stating “THERE WAS AN ERROR TRYING TO SEND YOUR MESSAGE. PLEASE TRY AGAIN LATER.” I searched online and the CF7 website states that this is an issue with the form thinking the message is spam (link below) due to the cached nonce. It then explains that I need to lower the interval for garbage collection, so the cache is emptied less than 24 hours. So I did this.. I tried just under 24 hours, 1 hour…and now all the way down to 1800 seconds (30 minutes) and yet I am still having the issue. I then tried to block page caching for the contact page. Still didnt work.

I have also installed Flamingo (an app by CF7 that databases the email messages sent through the form) to double check if the messages were even coming through. And they are but are being filtered to the spam folder in Flamingo, and not being emailed to me. I’ve been searching forums and all over the interwebs but have not been able to find a solution.

So any help would be immensely appreciated. Thank you!

Contact form 7 FAQ about the orange box error:
https://contactform7.com/faq/i-get-an-error-message-with-an-orange-border-even-though-i-dont-use-akismet/