Retirement tax questions

Hmm, this is strange because the ROTH Conversion form I filled in asked what tax year, and I filled 2021, even thought the conversion was performed in April 2022 (5 days ago).  They (Ameritrade) also said that a recharacterization from a Traditional IRA to a ROTH is just called a Roth Conversion but said they are otherwise the same thing.  It was difficult to find accurate info online, so I figured I could trust them.  Were they incorrect on both accounts?