Forms are not updating

If I make changes and go to preview mode, no changes are showing up.

This is on all forms

We are sorry for this inconvenience. 

The problem should be fixed now. Could you please check and let us know if the problem still persists on your side?

Thank you in advance for your understanding and cooperation. 

Still not working - nothing changed. Its been 7 hours now...

We are sorry for this inconvenience. 

I checked aforementioned form on your side and any changes I made were reflected to form preview as you can see here:

I tested this on Firefox. Could you please have a try with another browser different than the one you used before?