Issue Regarding Mikrotik 532A

hello, i have 532A with sr2 card, i have this issue, my cust has as client ap, zinwell G192-ODM, the issue is that the ap dosen’t connect to the mikrotik, but not all the zinwell does that, because i have a few that connect to the mikrotik, also i have senao cb3 and they connect well to the network, my mikrotik is configure as bridge. what seems to be the problem