Transcription is not working

I have a paid account.  I make my assistant the host.  I do understand that she cannot make herself a host but I have to sign in to make her the host every time.  Is this correct that I have to initiate the hosting? Even though she sets up all my meetings for me and runs them?

Also, I have members who are either deaf or hard of hearing, and in settings, I say I need captions.  When the meeting starts I click on enable transcription but then when I get the recording, there is no transcription and no captions for these folks. We SEE the captions while on the meeting but nothing on the recording. My assistant has tried this, I have tried this.  What do I have to do to get captions on these meetings for them?