Before you act on anything here, treat the details as a starting point for your own checks. Confirm the licence information on the operator's own site and, where a Nigerian licence is claimed, cross-check it with the relevant regulator rather than relying on a review alone. Read the bonus terms in full, especially wagering requirements, maximum cashout limits, expiry windows and which markets count towards rollover. A code can look generous until you notice that NPFL or EPL markets are weighted differently, or that USSD and bank transfer deposits qualify while some wallet methods do not.
The two guides that follow build on each other. One covers the company background itself; the other examines how that background connects to the bonus and payment terms you will meet at sign-up. Read them together, keep your naira budget in mind, and check whether withdrawals to OPay, Moniepoint, Paystack or your bank are covered before you commit.