@SBFR
Did you buy from him? Is that company legal? I checked their VAT number but this is coming @SBFR
SPÓŁKA Z OGRANICZONĄ ODPOWIEDZIALNOŚCIĄ... so, I have strong doubts, could you help me, please?
All those numbers mean is that they're a registered company. Anyone can get them.They don't tell you if the company is good, honest or reliable.
REGON is a category connected to statistical data that anyone (even someone selling potatoes in the street) has to have. KRS just shows that they're registered to operate as a company and NIP is the tax number that every man, woman, or business has in Poland.
Some more information (like the name of the agency) would help people here answer your question.