Hi Lap
Thanks for your response.
I agree the the top form seems to work correctly. Unfortunately the data isn’t being sent to Mail Chimp, I can’t find any of my test sign-up emails in any audience.
The other form I have added in my theme file by copying and pasting the short-code, that is all, so I’m not sure while it is acting so strangely.
I’m happy to use the top form, but could you give me an insight into why it isn’t syncing with Mail Chimp? (It is logging in the Debug Log.)