It's strange - what could possibly take 4 days to fix?
https://www.independent.co.uk/life-style/gadgets-and-tech/news/youtube-ps4-log-in-error-issue-fix-how-to-cast-a9541811.html
https://www.techradar.com/au/news/ps4-youtube-error-code-np-37602-8
https://support.google.com/youtube/thread/49846715?hl=en "If you're experiencing issues when trying to log into YouTube from your Sony PlayStation 4 device – we're on it! We've seen similar reports and our teams are looking into it. We'll circle back with updates soon! Thanks for your patience in the meantime."
Anyone here from Google got any idea what is going on?