We are working on migrate B1300 to v3.0 firmware now, it is available in the end of this month.
For 802.11R issue, you should create a new topic as it is nothing with DDNS. B1300 is based on QSDK, its mesh network is based on WIFI-SON technology, not 802.11r. If you want to use 802.11r protocol, you have to use the official OpenWRT firmware, and refer to [OpenWrt Wiki] B.A.T.M.A.N. / batman-adv.