I followed this tutorial, created the AWS Account, secret keys… and it worked ok (I received all test sms’ed). I then implemented this in my solution and it also worked. Left the project untouched for a week or 2 because of other work then picked it back up and my project is not sending any SMSes to my phone. I then ran the program from the tutorial, and again no sms… but also no error messages (in both cases).
I then removed the last letter from one of the secret keys and boom (as expected) error. So this means my keys are accepted by Amazon. I then send a test sms from the Amazo website and that worked.
I didn’t change anything with any of the sources nor at amazon so I’m really wondering why I don’t receive any sms ?