I am testing my form, but keep getting 'There are errors on the form'.

I have ensured that all fields are filled in and nothing is missing, but cannot see where there are errors. I have tested it both through the survey link and as a preview. 

Please help!

I cloned and tested your form and made test submissions as you can see below. It seems everything is as expected. If your issue still persists, could you send us the details of errors with some screenshots?