MF927U this is my mifi name and 08139946400 is my new MTN number how do I get my free 30gb I bought them separately

Hi Okubio. MTN MiFi usually comes with a SIM bundled with the device that you can activate the 30GB MiFi offer. If you bought a different SIM card, you will not be able to activate the offer on the new SIM.

To activate the MTN MiFi offer, simply take the following steps:
Insert the newly registered SIM into the MiFi device and power it on.
You will get free 30GB data with notifications informing you of the SIM registration and 100% bonus offer on the MiFi portal.
But, if you do not receive the free 30GB data after inserting the SIM into the MiFi, simply send ‘Activate’ to 131 via SMS.