Hey Adam.
I've seen this behavior within ALL my sites on numerous occasions now, custom or standard. Finally ticked me off enough to look deeper today. It has to be something to do with IP blocking or restriction within formSubmitAjax.php. Maybe a bug in the script that can't handle repeated submissions from one IP? That would be my guess as changing browsers, clearing cache, changing devices all result in the same failed submission once they start occuring. However when I switch my phone over to data from wifi, grab a new IP from my network provider, submissions work again on all sites from the new IP my phone has aquired. Once I hit what seems to be a certain number of submissions from a certain IP, within a certain timeframe, all my forms on all my sites stop validating and stop sending emails. Just to confirm this absolutely affects all Weebly sites, custom or standard theme, mine or otherwise. Once my IP has been blocked or restricted I can no longer submit any Weebly forms from any Weebly sites successfully. I've tried unsuccessfully to send submissions to every site in this thread. Each time no validations fire, and I get the success message. I can't actually validate if my email gets through or not as I don't own the sites listed here. I can only speculate that if no validations fire and I am getting the success message with all fields empty then the submission failed similar to the requests through my own sites. Eventually over time I am able to start submitting successfully again. This really slows down the development process.
Here is the response from formSubmitAjax.php. The response also seems to be returned almost instantaneously once submissions start failing. Doesn't seem to be any processing going on server side as the response is sent in under 80ms. It's a successful response but nothing is happening server side. No validations and no email. 80ms is many times faster than the average response time I see from a successful submission.
<!DOCTYPE html>
<html>
<head><meta name="format-detection" content="telephone=no"><script type="text/javascript">function ret(){parent.postMessage && parent.postMessage(document.getElementById('response').childNodes[0].nodeValue,'https://cbdoilnow.weebly.com');}</script></head><body onload='ret()'><div id='response'>{"success":true,"action":"finished","data":{"message":"Thank you. Your information has been submitted.","ucfid":"877634281479841616"}}</div></body></html>
Site in question is https://cbdoilnow.weebly.com/contact.html
This is simply a sandbox, with no modifications, to test in. My submissions fail here but also in every other Weebly site once they start to fail in general. Again, this is not restricted to my sites, once submissions start failing within any Weebly site attempting to submit a request through any other Weebly site will fail. No validations fire, which I assume means no one receives my email, and yet I get the success message.
Due to the intermittent nature of this bug simply going to any of the links yourself and submitting once is not sufficient testing. Submit multiple times in quick succession and you may be surprised what happens!
This has been going on for months, maybe longer.
Cheers...
