Ok ... first amended returns are taking 5 months or more to process so it most likely has not paid out yet so did you check the IRS site for a progress report ? https://www.irs.gov/filing/wheres-my-amended-return
Next put in a change of address form with the post office using any address where you can legally receive mail.
Then mail in a form 8822 to the IRS to get your address updated. https://www.irs.gov/pub/irs-pdf/f8822.pdf
And you can also log into your account on the IRS site to see what is happening with your account : https://www.irs.gov/payments/view-your-tax-account
