I've been having problems with Lazada sign in for months.
First of all at sign in I kept getting a message that my account was locked. It said I had to try unlocking by using their phone app. (which I absolutely hate) This I did, but, i simply got the same message (more or less) I contacted them by phone. The usual palaver to get to speak to somebody. I eventually got to speak to what I believe was a human. I was told to send a screen captures of the login screen, which I did. I got an email back several days later telling me they could not help me and that I should contact them by phone.... Yeah sure!!
There was no way I was going to phone them again based on the previous experience. So, I tried logging in using the Google option. This worked in a roundabout sort of way. I had to create a whole new account ! But, I was logged in.
This all goes back about six months. I still have to use the Google option. When I periodically check to see if the old email login works I still get the same negative message.
NB. I have been using Lazada for about five years. I have made many, many purchases. I could, therefore, be considered a good customer. Yet, in this time nobody from Lazada has contacted me to enquire if I need help logging in.