I have an issue with an extension where "Disable External Calls" has been turned on, but now cannot be turned off. The selector to the left of the option is greyed out.
In that case, you'll need to delete the extension, and when you import with the CSV again, just make sure that you don't enable those 2 options, only 1 of the 2.
Because in the interface, if you try to enable these options, you'll see that they are mutually exclusive. Enabling the one greys out the other (not disables, just greys out).
Importing with CSV bypasses this "protection" which is the situation you are in.
This may be something we will check to try to avoid in the future, but nothing you can do right now.