Try at 7am your time zone for better results ... and sadly this is normal as the IRS is very short staffed.
Amended return refunds are mailed to the address on the return so if you need to update the address mail in a form 8822 : https://www.irs.gov/forms-pubs/about-form-8822
And you can log in or set up an online account with the IRS to see all your account information including IRS notices ... https://www.irs.gov/payments/view-your-tax-account
