Hi,
I was in the same situation like you after followed the same guide.
My mistake was I didn’t filled out the IFTTT API URL in the General section of the API tab. We must set our Custom Openhab URL and this is not covered in the guide.
Now, the Auth test pass all green, I hope this is the same mistake for you.
I think I have your culprit : The request URL you’re setup is in http and your server redirect http to https then the body response is “Moved” in this case.
Try to set your URL with https ?
All is green from my side except triggers/itemstate.
Did you setup a correct test account in Auth menu ? (but I’m not sure it’s used)
What is the content of the first error block ? user/info
Auth failed … are you sure that the Auth test pass correctly now ?
My last thought is maybe a problem with your “iftttChannelKey” or “iftttTestToken” ?
I’ve faced to the same situation, stuck in loading state in item selection.
I’ve managed to get it work again by unlink my account in the setting of My applet > Services > My custom service and relink it again.