Form stopped working

Hi we have a form that stopped working. 

It used pre-defined fields in the URL. 

http://form.jotformpro.com/form/41484929398977?training=TOGAF&locatieTogaf=Utrecht%20-%20Nederland&yourPreferred=Nederlands&NLD_TOG_Choices=vier%20dagen%20TOGAF%20Certified%20met%20iPad%20mini%20€%201995

The form now only shows the first button.

When i do a previous page and then next page in the browser it shows up fine.

What is going on here?

Thanks

I will be right with you shortly as I am currently investigating your issue and need a bit more time. 

Can you please try this again on your end now and let us know if you are still having this problem?

I tried to replicate this a couple of different ways on my end, but so far it is working on my side. So perhaps it may have only been a temporary problem. It is working via the provided live link as well as a test form I used to double-check it more.

Your Link on My End:

Test of your Form: