fix issues

lib/extensions/string_extensions.dart

@@ -77,7 +77,7 @@ extension EmailValidator on String {
   }
 
   bool isNum() {
-    return RegExp(r'[0-9]').hasMatch(this);
+    return RegExp(r'^[0-9]+$').hasMatch(this);
   }
 
   String toFormattedDate() {

lib/pages/user/forget_password_page.dart

@@ -96,7 +96,7 @@ class _ForgetPasswordPageState extends State<ForgetPasswordPage> {
               title: "Continue",
               width: double.infinity,
               onPressed: () {
-                if (userName.isNum() && !userName.isValidEmail() && type==ClassType.NUMBER) {
+                if (userName.isNum() && type==ClassType.NUMBER) {
                   forgetPasswordPhoneOTP(context);
                 } else if (userName.isValidEmail() &&  type==ClassType.EMAIL) {
                   forgetPasswordEmailOTP(context);