Caspman setup cap (hapmini )keep disconnecting with err- registered to other interface

RB2011uias-2Hnd capsman manager.
eth1 is connected to modem and hapmini is eth3 connected to modem.

capsman manager router works without any problem. but my only cap disconnectig .
Both v6.46.2
Any can shoot the problem?
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Did you try to connect another client device on your hap and see if the problem is the same ?

İssue was same mac adress btw eth1 and bridge. i switched eth cable to eth2 and now no problem. thank you for reply