Error Response: Server congestion and/or maintenance
Solution: Reset your PS5 Internet connection settings and run a connection test. Turn off your router/modem, wait five minutes and then switch it back on. Try again later as Sony says it may be a case of the line being ‘temporarily congested.’ Unplug your PS5 and plug it back. To turn on the PS5 into Safe mode, Press and Hold down the power button on the Playstation 5, until the console beeps twice. Connect your controller with a cable and select "Rebuild Database". If this doesn't solve your problem, try contacting Sony directly or a video game repair shop for further help. Please post below if you were able to solve the issue yourself to help others.