ok, I’ve just had a go with it, a new lace pattern for my phone socks thank you.
I think it may be the way you are doing your yo. Are you wrapping it around the top of the needle towards you? this will twist the previous stitch upside down and expose two threads which will look like two stitches. The better way to do it is bring the wool forward as if to purl your next stitch (so underneath the needle) but knit the stitch and then the Yarn will go over the needle and create the eyelethole you need but you will only have the one stitch. Hope this makes sense.
I’ve just done about four repeats of the pattern and it is correct, so double check how you wrap your yarn around the needle. If it hasn’t helped then shout up again and I’ll try and work it from another angle.