Why is a signature field appearing when it should not?

When I go to the form, as the customer and I 'sign' - suddenly the Salesperson Signature Section appears. Can we fix this to avoid confusing the customer?

I have been checking your form and I could not see the sales person signature field appearing when I was filling the form as a customer. I can see you have the autofill feature enabled so it may be that the previous selections are saved so try using your form in incognito mode. 

If the problem persists, let us know. 

No luck. I tried after clearing the cache and going Incognito. 

I have been testing again your form and this is what I got: 

May you please kindly share us a screen-cast or short video about the issue on your end? 

Also, am I following the correct steps while filling out the form? 

We will wait for your response.