@bananaoverninja What kind of service are you trying to open the port for? Please share with us some screenshots under Advanced -> Port Forwarding/Virtual Servers page. You may refer to the below...

@adrem7 Have you upgraded to the latest beta firmware we provided? Kindly give it a go and report back, thanks. https://static.tp-link.com/beta/2021/202102/20210222/Archer_VR2100V1_210219.zip

@JemyBoy May I know what are the two devices that connect to the 5G network? Please show us the link speed on it, you can check it as this if it is a computer:...

@Mik21 May I know who is your ISP? What kind of modem are you connecting to the C80 router? Please follow this troubleshooting guide to check the basic settings again on the C80, and check if you can...

@Krooms You can find the latest firmware from the Global website here: https://www.tp-link.com/en/support/download/archer-vr2800/#Firmware The local official website will be updated soon, please...

@Roger2712 Sorry to know that. Are there any powerline devices in your network? If there are, try to relocate them and move them further away from the VR2100, which had been proved to be one of the...