Email notifications not working on 3.0.2.0

Hi all,
Any help will be really appreciated on this issue

I just installed my opencart 3.0.2.0 on advixe shared server .
Newsletter seems to work when I send it but notification emails are not sending out like order updates, new accounts , new orders etc

I went through several posts in the forum and got my smtp settings from my host and set it but on trying to update an order status an error message appears ,please see attachment to this post for the error message

I reverted back to MAIL functions , order status can be updated but email notifications are not sent out
My mail parameters read this -femail@mydomain.com.ng ( I do think know if that is what should be there) I got that from the forums

I don't know what other method to try . any one with great ideas pls help ...Thanks in advance

Ensure your admin - > extensions - > events page shows 33 events on the list and that your admin - > systems - > settings - > edit settings - > Mail tab -and its bottom page form have been configured.