Need help with MyQ

Hello. Newbie here. I would like to integrate MyQ and ST, via IFTTT, and everything I have read suggests it should be possible. Somewhere on here there was very extensive and detailed advice on how to do this but unfortunately (1) I got a message that option was unavailable, whatever that means and (2) I can no longer retrieve those instructions, as I would like to ask author what I must be doing wrong. Can anyone help please? Thanks.

Yes, those are the instructions I was following. Thank you. I followed them (at least I thought I did) and everything was going according to plan until I reached the IFTTT steps. The “if” part was ok but not “then” — I got some sort of error message (which, if I had been smart, I would have screenshot).