Error: Sender is not same as SMTP authenticate username

Hi

I installed the plugin, made only email notifications form for my needs and did send a test email which worked (1 time, I received default email notification). But after saving template again I can not send emails again (tested few my emails, all are ending with below SMTP error)

wp_mail function returned an error [SMTP Error: The following recipients failed:[email protected]: <[email protected]>: Recipient address rejected: Sender is not same as SMTP authenticate username ]

I’ve checked and emails from woocommerce about orders etc. are being sent fine, I did not change anything about wp_mail pluging where its email sender is correct.
Also same error when force sending email to my order.