Sending Service Issue

I sent two newsletters this morning, and they appear sent, but they have not been received. I went through some testing with your chatbot, and was told to contact support with the following information:

• I’m an experienced user with years of MailPoet usage
• Emails show as “sent” but aren’t being delivered
• Mail Tester confirms no delivery
• System Status shows no errors
• This started this morning

The email FROM address is “lisa” the link provided. Please let me know if you need any more information.

The page I need help with: [log in to see the link]