@PiotrTP May I know the model of the Archer is AX10 or AX1500? You can verify this by checking the bottom label underneath the router. This offline issue of the bulb seems quite common, you may check...

@Samiran-B Please check and ensure the Transmit Power on the A7 is set to be High, then you may try to modify the wireless channel and channel width settings on it to monitor again. As for the 5G...

@RogerArcherA9 May I know who is your ISP, and what is the WAN connection type on the A9? Please confirm if you have a stable connection all the time with the ISP modem by connecting the computer...

@Cannie OK, we can communicate the issue via email.

@Amarjyoti Which website did you try to download the firmware? Can we have the link for the website? We will confirm if that is uploading with an issue. You can wait and check for the new firmware...

@EnzoConqueror The hidden wireless network is used to build up the mesh wireless network system, which we call it Onemesh. For more details, please refer to the below article, which will help answer...