Emails not being received - no errors given
I'm writing a contact us form, as I have done hundreds of other times, but this time I'm not receiving any emails. The page is redirecting correctly, no errors are being shown and we are using valid email addresses. I'm confused, because as far as I can tell I haven't done anything different this time compared to all the other forms I've built that work perfectly.
I've attached the files - I must be missing something. Any help is appreciated.