We have no way of knowing what all you have looked at and tried, so it's not clear what you mean by "all the suggestions".
NOTE: Are you using any script blockers such as in a browser extension, such as NoScript? 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.
- 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, do all the above, then this time open 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.
If still no luck, see if trying a different browser (with cookies allowed) will solve it.