Hey @Roxylady, I don't have this exact model but simply the Roomba Combo j7+ but according to my research it is the same series as it is also a j model. I don't have any pets, but it has no trouble with my long hair. Every now and then I turn the robot round, briefly remove the brushes and, if necessary, the brush on the side if something gets stuck, but I've heard that this is a normal procedure for robot hoovers of all kinds

Naturally! Our robots are equipped with counter-rotating rubber lamellas, which on the one hand ideally pick up the dirt and on the other hand ensure that animal and human hair cannot get caught in them :)

We don't know. We have short hair and pets. In our flat (180M2 floor is stone, parquet and some carpets) it works great

I bought the newer Combo 10 Max model, but it works the same except for the station! I have three cats and a long-haired woman at home ;)) flawlessly! Don't worry about the Roomba...

Human hair is sucked up, but it often gets caught in the brushes. However, I have had this problem with all hoovers.

Was not satisfied with the product, many defects (return). I bought the Roborock S8 V Ultra from Dicitec / Galaxus, much better suction and mopping performance. My cat's hair is vacuumed up without any problems. Unfortunately, I can't answer the question about long human hair.