RT-AX58U and IFTTT won't link

[peevesillinois]

Hello!

For the past few days, I've been trying to figure out why RT-AX58U is unable to link to my IFTTT-account.
After generating an activation code in the admin-gui, I head over to https://ifttt.com/asusrouter and hit "connect".
So far so good. Then I paste my activation code and hit "Activate". After a few seconds, the activation fails and I get a error hint stating that I need to verify that my DDNS and WAN-access are enabled. It seems to be a general error pre-rendered in the HTML-markup. So I don't believe that is very accurate.

It says "Please check the following settings: Enable DDNS, Enable Web Access from WAN".
As far as I'm concerned, these settings are configured correctly from my end.

I have tried the following:

• Reinstalled latest the asuswrt firmware (3.0.0.4.386_48631)
• Used a different DDNS provider besides asuscomm.com (I Tried noip.com)
• Tried both with/without SSL enabled on the DDNS
• Port forwarding on/off
• Factory reset of the RT-AX58U
• Created another IFTTT-account
• Tested the linking procedure from multiple browsers/devices

No matter what I do I get the same response. Unfortunately, IFTTT uses PHP and forms here so there is no plain client XHR request that I can interpret in the browser network log.
I've monitored the system log in the RT-AX58U, but nothing is recorded there during the activation.

What can I do next?

Best Regards /
J

These are my current WAN and DDNS-settings:

 

[ColinTaylor]

Just guessing because I've never used IFTTT, but maybe it's hard-coded to use the default port (8443) rather than your custom port.

 

[peevesillinois]

Thanks for the input. I did try 8443 as well, without success unfortunately.
I’ll probably give up and look for another solution. My intention was to trigger a web request when a specific device connects to my router. A working IFTTT-integration would have saved me some python lines. But I’ll try nmap and ping-looping from another device instead. Perhaps more secure than ifttt anyway.