My form does not show PM.

In the time section of my form it only shows AM and does not give me an option to select PM. I have changed the time section to 24 hour in the meantime, but would like the ability to show both AM and PM. 

I cloned your form (https://form.jotform.com/63150446410142 ) and I noticed that you select the 24 hour. If you would like for it to show AM and PM, you need to select AM/PM as the time format to be used.

If you need further assistance, please let us know.
Regards

If you read my question you would see that i changed it to 24 hour until i got the AM/PM problem fixed. My problem is that when i select AM/PM only AM shows up and i do not have the option to choose PM. 

I checked again your form and I was able to replicate the issue you are reporting. When I enabled the AM/PM option for the Time setting, the option shown on the AM/PM dropdown is AM only.

Can you try to re-add the field on your form and see if this will fix the issue? Remove the current Datetime field and add a new one.