@Kevin_Z Thanks for the info. I found the issue. The instructions I saw previously, the same as the replied link, said: Step 2. Disable SIP ALG. On the wireless router, You may go to Advanced > NAT...

Trying to use mac>iphone, wi-fi calling. Both devices are on the TPlink network. Msg is displayed "Wi-Fi Calling is Not Available on This Wi-Fi Network" when attempting to call out. Tried searching...

@Cyborg-X2 Pretty sure AX21=an AX1800 not AX100. I was thrown by two different model names also when I first joined here. For the model selection in posting you would type in AX21 and select it....

This router and an Archer A7, when connecting to wifi ios shows the weak security message, says TKIP,is being used. WPA2-PSK/AES are set on both routers. Rebooted routers, forgot/reconnect network....

Of course the drop down list doesn't have the model of my extender. It's an AC1200/RE305. Yes, yet another reason I've ordered 2 extenders from a different mfr. I've been fighting with weird issues...

NOTE: The dropdown model list does not list Archer A7, had to select the A10 to post this. I've tried two newly purchased AC1750s in the last 2 days. The first one kept dropping the primary...