Phone Auth

I have bought Phone Auth and installed. I followed all the steps from here: https://wplms.io/support/knowledge-base/wplms-phone-auth/ The plugin did works for sending a phone message to verify the registration. However, 1) when I register a new account for testing purpose, 2) I filled in all the field in the registration form 2) I filled in the phone number but not to verify it; 3) I clicked finish; 4) It just reloaded the page and need me to verify the phone number first before clicking the finish.  It did not show any reminder or warning to tell the user to verify the phone number.   For the password field, it has a reminder like this: https://drive.google.com/open?id=1U3JWWUHu_FOEBheALHzLtKF1uOp-Zzuv How can I add a reminder like above when a user did not verify the phone number? Thanks