Here are some steps to check why new emails are not showing:

1. Check email filters
   -Dig into account settings to see what email filters have been set up
2. Check for messages in a spam folder
   -Sometimes, incoming mail can be flagged as spam and routed to a dedicated folder
3. Check the email address
   -Verify that the address typed for logging in matches the address connected to the email service provider
4. Check email server settings
   -Check for any security settings, manual settings, or forwarding rules that may be enabled
5. Check internet connection
   -Check to make sure that the device(s) are connected to the internet and can access email servers
6. Check email storage space
   -Verify that the email storage space is not full; emails may be blocked from coming in
7. Contact customer support
   -If none of these steps have solved the issue, contact the email service provider for assistance