Voice over is not reading what I am typing in textbox

Below is my code:

    <form>
        <div class="form-group loginFormGrp">
            <label class="caption">Backup Cloud</label>
            <div class="custSelect loginSelect">
            <label class="caption">Server URL</label>
                <input type="text" aria-label="Server URL" name="serverUrl" class="form-control" placeholder="example.server.com" value="">
            </div>
            <div class="form-group loginFormGrp">
                <label class="caption">Email</label>
                <input type="text" aria-label="Email" name="email" class="form-control" placeholder="user@example.com" value="">
            </div>
            <div class="loginBtnRow">
                <button tabindex="0" type="submit" class="lgBtn btn btn-primary btn-block">Continue</button>
            </div>
        </div>
    </form>

whenever voiceover highlights the input text field it reads "You are currently on text field, inside web content. To enter text in this filed, type. To exit web area,.." and when I Start typing it says nothing. and checked other appilcation or websites it reads what i am typing. but in my case its not reading. Please help if anyone knows the solution.

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