This may be the cause of cookies. Please see the following FAQ regarding cookies.
https://ttlc.intuit.com/replies/3300688
If after completing the steps in the above FAQ, you do not see the option to e-file your return or you are unable to select the option to e-file, you may not be able to e-file your return and would need to print and mail your return to the IRS.
https://ttlc.intuit.com/replies/3302281
You can then follow the instructions in the following FAQ to print and mail your return.
https://ttlc.intuit.com/replies/3401713