Did you restore an "old" from other router dhcp staticlist? That could be your problem.
Try to do a WPS reset and try without any input from other routers.
You have to enable " Enable JFFS custom scripts and configs " also.
The dhcp_staticlist is originally from my old AC68U but it's just ip and mac-adresses, and it worked fine after I flashed alpha4.
I think a WPS reset is what I've tried?
Can't enable JFFS or anything since the router wont boot