What's inside the data folder?
Actually why are there data (2).grf, data(3).grf, .. (4) and (5)
Tell us the size of them, you probably extracted them more than once. You only need data.grf and can delete the 2 3 4 5, however that shouldn't help you in connecting but will save space.
Finally, did you run rsu-kro-rag-lite and rsu-kro-renewal-lite to patch your client? Don't do it until you tell us the size of your data.grf.