Complete loss of conditions as submissions no longer show the Thank You page

Hello,

ALL our forms have suddenly lost their conditions and the email auto responders. In particular the condition that directs the user to a thank you page.

For example, form 42994481931970 is one of those forms. I cloned it with form 50966691839978 and it works without any changes other than cloning. What is going on? I have to clone all the forms I have in order for them to work? 

There was an issue with our form's submissions failing reported earlier.

But our dev team have now fixed this and resolved the issue immediately.

Please retry testing again. Better if you clear first your browser's cache and retry submission.

Submission should now work and the Thank You page of the form should be reached.

Please let us know if issue still persist.

Thanks.