Is this AEON address valid:

Wms78SCDrWv29sKzp5e2XfgsfYz135BWM4dwxRYoX4e6NcAjtY3JYXeWUQRVLu7ZzPNGPeq78zpKYJ9 Qs6Qr9WKv2BNJ64GBe

I saw some warning that the ones not starting with Wm are not valid ? So was just wondering what was/is the issue and decided to double check before I jump on this wagon...