There's one of two possible reasons why you're not receiving the pin code when logging in to your OLX profile.
1. You are subscribed to the "Do Not Disturb" service from your network service provider.
2. The MTN network infrastructure in your area just does not have the capacity to support the communication signals to your device.
So, how can we try and work around this? For starters, please opt out of the service by sending the word "ALLOW" via SMS to the code 2442. Once this is done, please try logging in with your phone number on the OLX platform again.
If this does not work, the other options are to log in using the Facebook login option, or you can register a new phone number with a network other than MTN.
Please feel free to get in touch with us should you need further help - we're nice people :)