Button Click has disabled

When i try to make this code

driver.FindElement(By.Name("Create Account")).Click(); var webs = driver.FindElementsByClassName("android.widget.EditText"); webs[4].SendKeys("123456"); driver.FindElement(By.Name("Full Name")).SendKeys("Ahmed"); driver.FindElement(By.Name("Email")).SendKeys("[email protected]"); driver.FindElement(By.Name("Mobile number")).SendKeys("123"); driver.FindElement(By.Name("Create")).Click();
give me an exception in driver.FindElement(By.Name("Create")).Click();

the exception is An element could not be located on the page using the given search parameters.

but when use the same line of code as

driver.FindElement(By.Name("Create Account")).Click(); driver.FindElement(By.Name("Create")).Click();

Work correctly !!! Can any one help me please to fix this and why i got this exception ?