Find() method is not created dynamically it looks for the element in the current DOM. It may happen that the DOM is not fully loaded hence Test Studio is not able to find the element.
In that case you can add WaitForExists
step for the particular element which refreshes the DOM.
Another option is to add a coded step
which refreshes the DOM:
If the issue persists please:
1. Send us a screen shot of that button and its DOM.
2. A short Jing
video would also help us better understand the issue.
Hope to hear from you soon.