Yes, if your ex is over 62 or dead, you, being over 62, can potentially be eligible for a spousal benefit if it is bigger than your own benefit. For it to be bigger than your own benefit, 50% of his benefit must be bigger than YOUR primary insurance amount which is likely about 1180 or so. That means his PIA needs to be about 2360 for a spousal on his record to be better for you than your own. You get the highest benefit, his or yours. That said, if when you applied at 62, he was not yet 62, you wouldn't have been eligible for a spousal because an ex is not eligible til the worker spouse is at least 62. If, on the other hand, he was 62+ when you applied, the SSA checks to see if spousal is higher and if so, pays it to you.
So bot***** *****ne is that while you have eligibility for a spousal benefit, if it is not bigger than your own, then you must take your own. It sounds like they may have confirmed that your own is higher than your spousal, ergo there is nothing left for you to collect because you are already collecting the higher.
BUT, if he dies, you can get 100% of his benefit, so long as you file for it AFTER you hit your FRA (which you have hit), and you'd pick that if the full 100% exceeds your own benefit.