I'm trying to correct a typo in a calculated value on a form but I cant seem to edit it

The new tool doesn't seem to allow me to edit the calculated value I created (which is a text comment I'm inserting).

Hi,

Thank you for contacting us.

I have cloned your form and I was unable to change the text as well, however I used the button to delete and I have deleted all the text you had there and added a new one.

When on the edit screen, click on the button shown in the image below : 

Make sure you are adding the value as text, to do it just follow the images below : 

This is my result : 

Let us know if it works, if not, we will be glad to assist you.

Regards.