Sorry to respond without answering your question.
If you search for IFTTT in his Google Group, you'll see there's a history of people (myself included) trying and failing to use IFTTT to control something with WirelessTags. It was just too unreliable.
I eventually gave up and now use local URL calling to a PHP script running on a local web server (which then calls a script to control a Wemo switch).
These days, I'd probably do it with HomeAssistant, but I didn't have a stable HomeAssistant server at the time I invented my URL/PHP solution.
Brian