Missing return transcript for 5th Year - N400

[harsimran0902]

Greetings - We moved to US in 2015 Jan and filed tax returns through company provided services (through Deloitte). I am now eligible for apply for my Citizenship and the document checklist suggests that one needs to provide last 5 years of return transcription. Upon logging into IRS.GOV, I do not see my return transcript for 2016, although I do see the account transcript showing a refund to me. I called up the automated transcript request line and upon entering the year as 2016, it says invalid year.

Any guidance here is highly appreciated. Shall I file with 2016's Account Transcript along with the return transcript from 2017 till 2021?