Maybe you could ask them to try using Lexe wallet directly. It sounds like they're accepting in-person payments, so all they need is a mobile wallet?

MaxFangX

‎I run small suya stall experiment in Benin City, Nigeria. My biggest blocker is trust — customers think BTC na scam. If Zaptrain can make a simple QR that says "receive only, can't steal" in pidgin English, I can onboard 5 shops this month. Testing with 

bitcoin

Zaptrain: Lightning invoicing where we only hold a receive-only key

zaptrain

‎I run small suya stall experiment in Benin City, Nigeria. My biggest blocker is trust — customers think BTC na scam. If Zaptrain can make a simple QR that says "receive only, can't steal" in pidgin English, I can onboard 5 shops this month. Testing with chikasun@blink.sv