My OpenCart store has suddenly locked me out of the back-office. Every attempt to sign in with the correct credentials throws the standard “Incorrect username or password” message. I need someone who knows the platform inside out to diagnose what’s gone wrong and restore access quickly. Here is what you’ll be dealing with: • Front-end remains live; only the admin login form malfunctions. • Cache clears, password resets and basic config tweaks have already been tried with no success. • FTP and cPanel (or SSH) credentials can be supplied as soon as we start. Deliverable 1. Admin dashboard accessible again with the existing username and password (or a new secure set you generate). 2. A short note describing the root cause and the exact steps you took so I can avoid a repeat. Time is of the essence; please be ready to jump in right away.