I’m having the same problem described in this older post:
I just got my TT in the mail and have the app installed on my Mac. I successfully paired the TT and I can see the Connect to IFTTT button. I click the button and it changes to show “Edit IFTTT recipes” but it’s greyed out. I never get a prompt to log into IFTTT. I have to quit the app and re-open it to see the Connect button again, but the same thing happens, even after a reboot.
I got the TT specifically to work with IFTTT, so any help is greatly appreciated!
ETA: Got it working for my needs via webhooks, but still would love to get it connected to IFTTT.