l created a user in Amazon IAM and give Administrator Permissions. And I created Key and Secret Key for this user and writed this keys to Sendy. Still showing 0 of 0
Try syncing your server system clock using NTP. Amazon API requests respond with some sort of "timeout" if your system's date and time differ 30 seconds or more with theirs.
@fazilcanoztas I've deleted your previous 'new' thread, let's keep to this. You mentioned that you solved the problem by syncing your server clock with NTP (thanks @rolope by the way), but now you can't send emails.
Please PM me your login credentials and I'll check. Thanks.