Devices disappears on network using netgear RX45

I use router Netgear RX45 for my homework. Suddenly, devices on the network disappeared from the network section in the file browser including the drive of READYSHARE. This happened to all my computers on the network regardless of laptop, desktop, windows 10, windows 11, home version, pro version. I checked and made sure all the settings listed were correct (I believe)

  checked all MSB items

  set the following services to automatic and running

• Computer Browser (Browser)
• DNS client
• Function Discovery Provider Host (FDPHost)
• Function Discovery Resource Publication (FDResPub)
• Network Connections (NetMan)
• UPnP Device Host (UPnPHost)
• Peer Name Resolution Protocol (PNRPSvc)
• Peer Networking Grouping (P2PSvc)Peer Networking Identity Manager (P2PIMSvc)
• SSDP discover

None of them helped. It was wired that disappearance happened almost at the same time on all my computers. Currently, under the network section, I can only see Synology a NAS and sometimes the computer itself I am currently using. Nothing else or other computers on the network or the drive connected directly to the router. Note that, before this occurrence, all my computers were working fine. They could see all the other computers and router drive and NAS under network section in file browser. Mapped drives are working as usual.

Any idea what could go wrong? Could the router have some setting changes due to automatic firmware update I am not aware of or any other reason? That's the only common thing on the network. What else should I check? Thanks!

P.S. My router is running firmware V1.0.11.112_2.0.77.