Filed wrong tax return for 2018 in 2021.

I filed an old 2018 W2 form on January 14th 2021 and it's been accepted on TurboTax. I also checked the box where it said I could claim my $600 second stimulus check that I've already received on January 29th from my 2019 Tax return that I filed in 2019. Tax season is here and I was wondering if TurboTax was going to reject the claim seeing the deadline to file a 2018 Tax Return was April 17th of 2018.

 

I have my current W2 form from my job for 2020 which came in the mail in January 16th and was rejected on TaxSlayer.com because I was silly enough to file a 2018 tax return and now I have to wait for TurboTax to reject the 2018 return. It says accepted but someone said that accepted doesn't mean approved and it will most likely get denied because of incorrect information. Please shed some light on this subject and help me.