If your amended return showed that you owed $1,300 and the amount was deducted from your account, then the amend was received. The IRS is behind on processing returns. If you sent a check with the return and the check was processed, then the return was received.
If you paid with a credit card or bank account and the payment has gone through, then the amended return was received. It normally takes 16 weeks for an amend to show up on the website. With COVID and other delays, it may take much longer.
