I understand how difficult it is for you to be unable to send Purchase Orders to your vendor's default email address. 
Please be assured that we will do our best to resolve this issue as soon as possible so you'll get back to working order.
 

We will escalate this case to our Next Level Help team, who'll review your comments and cases with support. 
 

Please keep your phone lines open and expect a call from our support team within 1-2 business days.
 

We're always here to assist if you require further assistance. Please don't hesitate to leave a comment here in the Community. Stay safe.