The condition to change the Thank you page is not working

I can not get any of the options to change on the Thank you page.  Wont work for redirect or for changing the message.  

Cannot choose "submit" from list of choices.

Based on your screenshot, you have not created an IF statement that's why you are getting an error.

With IF statement, you can't use static elements like the submit button or static text simply because they do not accept user inputs.

An example would be this:

If you only want to change the thank you page without condition, here's how: