Hello wjoycem -
I'm sorry to hear that you have run into difficulty submitting a support case.
One thing to be aware of is if you leave any of the required fields blank, the error message that occurs will appear at the very top of the support case form, but it sounds like you are saying that the information you input into the form is also being blanked out when you click on submit.
Can you please reply back to this post letting me know as near as you can the time you attempted to do this so I can have a look to see if we can locate an error on our end? Please also let me know if it would be alright for us to do some testing of the support case form within your account.
I also suggest you try clearing the cache of your browser and trying again with the case afterwards - should the issue persist at that point, please also respond here letting me know the browser and operating system you are using so we can look into this further.