So end of may through end of july and no signs? I can't zoom in enough. Initial pistil growth at terminals look like little mohawks forming, initially. Ensure those are not starting to form.
If you see not signs of flower, they are probably photoperiods. If they have been outside in in a light cycle similar to the USA, then i'd expect them to be switching to flower soon simply due to length of night shortening quickly as we go.
you may have getton some photoperiods -- either a poor breeding process for them or pollen contamination during the multi-step process of making fem auto seeds.