Auto responder not working properly

I have two emails: hello@example.com and subscribe@example.com. I input my data on both web pages and I received both emails on my webmail, which shows that there are no errors on my code. However on my gmail, I only received auto responder message from "hello" and not "subscribe". I already tried making the intervals to 0, tried inputting my data on "subscribe" only, but it seems like only the "hello" is working for the auto responder. Am I missing something? What should I do with this? PS. Please help asap!!! This is for my thesis and my defense is next week :---(