Hi,
I am also having this issue. Have now had multiple new clients (that thankfully have reached out via other means) saying they completed the form but I never received it.
Yes, I have checked, spam, junk etc I have also had friends complete form, have completed it myself etc and it has worked everytime.
I have then checked my analytics and cross referenced the 'form submissions' I have received and they do not match up, so there is direct evidence that forms are being submitted and they are not reaching my email.
Help?
This is obviously hurting my business and I've had to put an apology on the 'form submission acknowledgement' saying 'this form doesn't always work'. Urgh.