No MFA code arrives until you try to log into TeamPass

[DobroFenix]

I have MFA enabled - you need to get a one-time code by email to receive OTP.
Using a script, I transferred all users from AD to TeamPass. At the same time, I leave the user passwords in the TeamPass database empty, since I cannot transfer them from AD to TeamPass.
table users:

If the user tries to get the MFA code by e-mail in order to receive the OTP code, then he will receive an error that the user was not found/wrong.

But if the user presses the button not to request the MFA code, but to Log In, then he will receive an error that the OTP code is not correct and the correct LDAP password will be written to the user's database:

And if you now request the MFA code, then it will successfully arrive.

How to make sure that a user without a password can immediately correctly request an MFA code?
Or how to make sure that when requesting an MFA, the password is checked in LDAP and entered into the database?