It has been taking the IRS a very long time to process mailed returns. And since your return is a 2018 return, nothing is ever going to show up on the IRS refund site. Only information for 2020 returns is shown there. Did you use a mailing service to track it so that you would know they received it when you mailed it last year?
Only the IRS can provide information to you:
To call the IRS:IRS: 800-829-1040 hours 7 AM - 7 PM local time Mon-Fri
Listen to each menu before making the selection.
First choose your language. Press 1 for English.
Then do NOT choose the first choice re: "Refund", or it will send you to an automated phone line.
Instead, press 2 for "personal income tax".
Then press 1 for "form, tax history, or payment".
Then press 3 "for all other questions."
Then press 2 "for all other questions." It should then transfer you to an agent.
**Disclaimer: Every effort has been made to offer the most correct information possible. The poster disclaims any legal responsibility for the accuracy of the information that is contained in this post.**
