Exsist email issue

### Description of issue
Same email id exist
if i click sign-up btn with existing email account account is creating so resolve that issue
### Expected result
alert email is exsist

### Actual result
no alerts

```
Path: /pages/donor_registration.html
Browser: Chrome 111.0.0.0 on Windows 10
Viewport: 1504 x 860 @1.5x
Language: en-GB
Cookies: Enabled
```

[Open in BrowserStack](https://www.browserstack.com/user/try-live?url=https%3A%2F%2Fdeploy-preview-1--donorr.netlify.app%2Fpages%2Fdonor_registration.html&os=Windows&os_version=10&browser=Chrome&browser_version=111.0&resolution=1504x860&speed=1&start=true&ref=netlify-source)

Submitted from [Netlify Deploy Preview #1](https://deploy-preview-1--donorr.netlify.app/pages/donor_registration.html)