Sorry that I disappointed you. Note 4 still says “great” so I do not consider that a bad note at all. It was actually meant to motivate you to strive for excellence.
I already put a request on Github in case you regain some motivation.
I discovered that it works if I declare the corresponding MySQL type as “int(1)”!
I have the same problem. The checkbox shows the actual value of the database, but changing the value when submitting the form (add or update of record) is without effect.
I got this to work. Not the best result, but it is vertical:
Last Name:
[abase form="2,insert" table="Member List" columns="Name" elements="Name"]
First Name:
[abase form="insert" table="Member List" columns="First_Name" elements="First_Name"]
Email:
[abase form="3,insert" table="Member List" columns="Email$Add Member" elements="Email" ack="red"]