@Tirux,

This sounds like your main router may have simply stopped assigning IP addresses. Does restarting the network fix the issue?  

Are there any security settings that you may have changed, such as setting a device whitelist?

Does this happen to your wired devices also?

If the issue persists, I would recommend to try and turn off fast roaming to see if this was the cause of the issue, as some phones have trouble reconnecting to the network when this feature is enabled.

  @Tirux 

Thanks for the update.

If you do not mind, I would like to forward your case to the senior engineers for further checking and please check whether you could get an email from us.

Best regards.