Revert the form back to the older versions

On several occasions, I have made changes to my form and saved them and they have not remained saved. 

I have spent hours making these changes only to find them deleted or removed.

This is very annoying and I don't understand how this happens.

Is there anyway to retrive a previously saved formed?

Hello,

I have made a change and saved in order to test your forms and I have seen that the form has been saved successfully. Also, I have cloned your form in order to test on my side and I have managed to save successfully.

Please try to clear your browser caches. I have used Mozilla Firefox and Google Chrome. I did not receive any error.

You can check your Revision History and if you prefer you can revert back your form to previous versions as the following screen:

Please be aware of that; if you delete a field from your form, your submissions belong to that field will be deleted and you will be not able to receive them again.

If you need further assistance, let us know.

Thanks in advance.