Yep no new certificate required. October 3, 2022 was the date of his original one. I'm fairly certain they are supposed to good for 2 years so I'm not sure why they are requesting a new one from you guys, other than just generally being unorganized on their end. But maybe because it's so close to the 2 year mark, by the time the visa is issued it could potentially be expired, so they requested a new one would be my best bet.