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Please advise as i am receiving this error
Your Sendy installation is unable to get your SES quota from Amazon because the 'Amazon Web Services Credentials' set in Sendy's main Settings are incorrect. You probably did not copy and pasted your IAM credentials fully or properly into the settings. Please re-do Step 5.2 and 5.3 of the Get Started Guide carefully to resolve this error.
appreciate if you could assist me.
Amazon recently discontinued their old V3 API in favor of the latest V4 API (more info here).
Your outdated version of Sendy uses Amazon's deprecated V3 API. You need to upgrade Sendy to the latest version.