The reason for the element is not clickable at point(x,y) exception. It mostly happens in Chrome so if you are mostly working with Firefox or IE then you will not be getting this exception. Chrome always click in the middle of Element. Sometimes you will get this exception due to Sync issue also.
Another cloud be:
This is caused by following 3 types:
1.The element is not visible to click.
Use Actions or JavascriptExecutor for making it to click.
By Actions:
WebElement element = driver.findElement(By("element_path"));
Actions actions = new Actions(driver);
actions.moveToElement(element).click().perform();
By JavascriptExecutor:
JavascriptExecutor jse = (JavascriptExecutor)driver;
jse.executeScript("scroll(250, 0)"); // if the element is on top.
jse.executeScript("scroll(0, 250)"); // if the element is on bottom.
or
JavascriptExecutor jse = (JavascriptExecutor)driver;
jse.executeScript("arguments[0].scrollIntoView()", Webelement);
Then click on the element.
2.The page is getting refreshed before it is clicking the element.
For this, make the page to wait for few seconds.
3. The element is clickable but there is a spinner/overlay on top of it
The below code will wait until the overlay disppears
By loadingImage = By.id("loading image ID");
WebDriverWait wait = new WebDriverWait(driver, timeOutInSeconds);
wait.until(ExpectedConditions.invisibilityOfElementLocated(loadingImage));
Then click on the element.