Start with the official operator site
Open the verified Nigerian operator domain yourself and look for its mobile instructions. Follow the store link from there and compare the publisher. A matching icon or familiar name alone does not identify the app. If you cannot verify the publisher or download, use the official mobile site.
When your session breaks during payment
Before reinstalling the app or clearing data, check whether the payment already created an order. Use the verified site to view your cashier and open the bank separately to check for a debit. Reinstalling the app does not reverse an approved payment.
Requests to share your screen
A third party does not need remote access to trace a payment. Decline screen sharing or accessibility access requested through chat. If you have already installed a suspicious app, use a trusted device to contact the operator and bank.