Hi @framefocusme, welcome to the Community! 

Can you confirm whether the connected Bubble account has the correct collaborator permissions for the production version that you’re wanting to select? For example, to be able to create things in Bubble you’d need Admin level permissions. You can find out more about the different permission levels here: https://manual.bubble.io/core-resources/application-settings/collaboration#admin.

If you do make any changes to the permissions for the connected account please then reconnect the app account in the Zap to ensure it connects to Bubble with the updated set of permissions. 

If the correct permissions have already be granted, perhaps you might be able to manually select the desired app version by selecting the Custom option from the App Version field and then entering the ID for the custom branch name you’re wanting to select. You can learn more about using that custom value option here: Add custom values to dropdown menu fields in Zaps

Hope that helps. Keen to ensure this gets sorted so please do keep us in the loop on how you get on!