Hi there!
Thanks for your query.
Please go to the phpMyAdmin, load up your site's database and then open the schema for the xxxxx_sppagebuilder. (here xxxxx is your database table prefix )
https://prnt.sc/MhUD9dCC1E0z
In the table you'll see, it should mention a line for this column ( ordering).
https://prnt.sc/-9PaQWSbXmdz
Just set default value for colomn ordering and save.
https://prnt.sc/woMLzS9VW8ZD
Clearing your Joomla and browser cache is always important.
Please let me know if this solves the issue for you.
Best Regards