So sorry this got missed. It is usually a browser problem that can be fixed by closing out the program and restarting the program. If it still does not work you can try using a different browser.
Is there a section in there that asks you how you choose to pay. You have to make that choice to continue(I have a different version) It will ask for credit card info and won't move forward if any field is left empty or incorrect.
Disclaimer: Not a tax professional. Information gathered from internet links. Anything dated in June 2019 was posted in prior years and is before the 2019 limits and changes.
