May or, may not help in this situation.
I had a batch show up, and a few of them shipped with the wrong country code programmed.
the ones that wouldn't connect were just perpetually hung at "building Unleashed Network"
good catch on the R310 not supporting mesh... don't do that obviously.i don't necessarily see a problem with EoL firmware in a home environment, assuming this is just for basic connectivity.... although WPA3 could be a good reason to stay with a wave...
Does the server already have an existing gateway configured?It may need a static route put in to point at the network the camera is on.if the server doesn't have a gateway configured, Create another VE on the L3 switch for that vlan.