is seems like you are saying you filed after e-filing was closed for 2021 returns (around 10/15/2022). If so, it had to be mailed. if you did not mail it the IRS doesn't have it so file immediately. If it was mailed more than 4 months ago, there is a high probability it got lost in the mail unless you have proof of delivery. in this case I would refile. if you filed within the last 4 months, then it may just be a case of the IRS not yet getting to your return. in this case it's impossible to properly advise what to do because there's no way of knowing if the IRS got it or not. if you are due a refund there is no penalty for late filing so you could wait the 4 months before refiling. if you mailed the original and there was a payment included and you want to refile, if the IRS got the original and your refiling, both checks would be cashed but eventually after deducting any penalties a refund for any excess would be issued. you could also stop payment on the original check for which there would be a bank fee and if the IRS does get it a penalty of at least $25 or 2% of the amount of the check if it was for $1250 or more. refiling would also require attaching any require forms such as w-2s..
