auto generated transcripts stop at just before 30 minutes

Autogeneration of Transcripts stopped to just under 30 minutes starting on Monday.  Normally, if a transcript didn't autogenerate, I can edit the video settings and click Generate transcription but that option isn't there after the autogeneration of transcripts has started. 

I am unable to locate any documentation that states there is a cap on the number or hours of autogenerated transcripts.

We have been uploading at least 5-7 2-hour Zoom recording sessions per week since January. These videos range from 160 to 260KB.