Can't create a new deck

In Anki Desktop, under “Decks” I click “Create Deck.” I enter a unique name as prompted and click “OK.” Under “Deck,” only the original deck appears, not the new one. Any troubleshooting steps? I’m completely new to Anki.

Edit: my new deck shows up on the web interface after syncing, but it’s still missing from Anki desktop.

Edit 2: It’s allowing me to create a deck titled “CCA Soil and Water Management,” but it is not allowing me to create a deck titled “CCA Plant Nutrition” or “CCA Plant Nutrient Management.” I’ve tried creating a new deck several times, syncing, and rebooting the program.

Could you post a screenshot of your deck list?