Prefill is not working

I have a form where most of the field should be prefilled when the form is used again after the click on the thank you page.
I have tried both this method and via URL parameters, but some fields can't be filled, ie the time in the arrival date field. I have the date it self filled, but the time is not and in the method mention here the field is not selectable.

Hello Borgerberedskabet,

Thank you for reaching out to Jotform Support. I am sorry that this is happening. Rest assured, I'm here to help. You raised a similar concern 2 months ago and can I confirm if you are still talking about the same form or is it about a different form now? The reason I asked is you have contacted us using a Guest account and I am not able to find an account and forms associated with this email.

Please provide us with your email/ username and the link to your form so I can take a look at it for you. As soon as we hear back from you, we can move forward with a solution.