Elements 2022 Would Not Work With My Mac Monterrey Yesterday...But Is Working Today

No explanation.  Chatted with Adobe Elements people yesterday, had one aboard my computer, but they never got it working.  Spent more than two hours trying.  I paid for it, had the serial number, but it wouldn't load.  Finally a higher level tech said it wasn't compatible with OS 12.0.1. Rats!  But, this morning, I double-clicked a jpeg and it started right up.  Great!  Love the program *again*.