The thing that fixed it for me (with the blue PLA at least) was to tighten the bolt as described here:
Once tightened it worked a charm.
However with the green PLA, no matter what I try it fails. I suspect it’s garbage PLA. I tried adjusting the temps, changing the retraction, cooking it in one of these:
https://www.amazon.co.uk/dp/B093GRBS4F?psc=1&ref=ppx_yo2ov_dt_b_product_details
Nothing worked. However if the print is not too high it seems to be fine, even with a large (but not so tall print)… I’m giving up on that PLA to be sure…
Hope that helps