Recently I had to replace HUAWEI wireless router for MikroTik RBD53G-5HacD2HnD&EG18-EA and now I’m having problems with connecting a “dumb” old 2.4 ghz devices - Samsung M2020 printer and Xiaomi lamp. Both are not connecting with the “disconnected, unicast key exchange failed” message in the log. On the device side error is “access security error”. Other devices are connecting fine to this 2,4 ghz. network. It gives me nothing to dig deeper.
MikroTik seems to be very advanced and I would like to ask for some tips how I can troubleshoot this or what I can change in wireless settings.