Is it healthy? Or I have some problems?

I agree with numbers. It looks like its revegging. but over all looking mostly ok. maybe a bit high in N, could just be the lighting.

Some plants do grow like that, but you can't assume that's the case. So, rule out the other possibilities... XS2000 is roughly 500 umol/s of PAR. Real world testing at cocoforcannabis has it rated at 460 umol/S. For 12 hour operation you probably want to stick to 6.5 sq ft give or take. If you are covering an area much larger than this, the light is the likely cause of the weak yield. this would be ~35 dLI give or take, and if you go much below 25 DLI you start to grow almost entirely larf. 35-40DLI requires supplemental CO2, so it's the soft cap for most people. Local variables matter as far as what your exact maximum DLI you can provide to the plants. Temp, rh, atmospheric co2 all matter to some degree. if giving plenty of light, you can safely blame the genetics at this point. I'd also say your fertilizer formula needs some tweaking too. Your leaves never developed 7-9+ fingers. Many are missing the 2 tiny fingers - which in some cases is normal too, but overall they look a bit overfed and something likely impacted it's normal progression of blades of leaves forming. This is often due to an out of balance nutrient formula. Defoliation of upper leaves can also cause excess stretch. When you remove upper leaves, it makes the plant reach for light. So, when the bro science tells you to remove leaves up top to get light hitting flower below, don't listen to that nonsense. That's not how it works. Apical dominance is why lower buds don't develop as nicely. While 'some' photosynthesis can take place on any green surface of the plant, the leaves are 100x more productive in that sense and the products are highly mobile in the plant, so location of where it is produced is irrelevant. apical dominance is how it is distributed and not where light hits. Even if you did cause some extra stretch at teh top, the buds don't look like they would have formed anything substantial anyway, but definitely stop any heavy defoliation. Never remove a leaf without a super good reason to do so. If you want good light penetration, don't overcrowsd the canopy. ~3 primary colas per sq ft is plenty.. some side branching will fill in gaps no problem and yield will be maximized.. more colas just means smaller, more distributed flowers. As i look more, it almost looks like this plant re-veged. smooth leaves (no seration), 2-bladed leaves... odd leaves in general are a sign of a revege among other things. Is it possible you interrupted it's dark cycle a few weeks back? something substantial, not a minor interruption. rule what you can out and what is left is the likely answer.