I've been trying to file an extension & the transit button does nothing, then the captcha button turns red and says to complete again,won't let me even click in it now?

[DawnC]

Try this link - https://turbotax.intuit.com/irs-tax-extensions/

Or try a different browser.  

IRS extension link - https://www.irs.gov/forms-pubs/extension-of-time-to-file-your-tax-return

If you are getting a refund, don't sweat the extension.  If you owe, make a payment.   Pay your taxes at IRS Direct Pay (this also automatically gives you an extension).

If you have to, change the time and date settings on your computer to reflect a west coast time zone if it is a timing issue.