I don't know what you are experiencing and why you are asking. During the efile process is the Captcha not working correctly? If that's the case, then see the following:
NOTE: Are you by any chance using any ad blockers or script blockers? If so, that may be blocking the Captcha.
Otherwise, here's how to troubleshoot:
First, simply refresh the page in your browser and see if that changes anything.
If not, then log out of TurboTax, and clear your browser Internet cache.
Then close the browser and reopen it.
Make sure cookies are allowed/enabled in your browser settings so the Captcha will appear.
Log in and try again.
If still unsuccessful, close browser and reopen using a private window/private browsing (aka "incognito mode").
Log in with the private window (again making sure cookies are allowed) and try the efile again.
Or if still a problem after all that, see if trying a different browser (with cookies allowed) will solve it.