What type of return are you attempting to EF? If its a 1040, it possible that Intuit closed their EF ability down early, since the IRS shut down happens over a holiday weekend.

Well their website doesnt say they'll close early

https://proconnect.intuit.com/support/en-us/help-article/electronic-filing/e-file-start-stop-dates-f...

...whats the message you get when you attempt to EF a return?