repeater. Users logged ouf

Hi,
I have a problem. I have a x86 mikrotik with an AP connected to it. I setted up 2 repeaters. DHCP etc disabled on the repeaters. But when a users connects and log in they are logged out within 10 secs. Also wierd. Example: they get ip 10.10.0.91 but the status page says 10.10.0.100
How can i fix this?

Greets,