@Perdoni Please refer to this thread to check and confirm the basic settings, then get back with the required information, we will confirm soon: [Troubleshooting] Router Disconnects from Internet

@Zachary1217 Please ensure the QoS settings on the AX6000 are correct as described in the OP. You can also confirm if there is any setting in the local PC or computer as described by Cansol, which is...

@Trey50 Is the model also Archer A6 v2? How about disabling Onemesh on it? You can try to install the firmware we updated here, then disable Onemesh to confirm: [Solution] Disable Onemesh Hidden...

@KresnaNET That's bad. I remember you have opened the case with the support engineers, please kindly contact them directly to see if they have other suggestions or solutions, thanks.

@aarreddy Hi, sorry for jumping in. Just to confirm, have you enabled Access Control on the AX73? You can check if the firmware we provided here will help: [Solution] Cannot connect to Archer AX73...

@Jarax never mind, that's OK, we can try to fix it on the latest version.