What is the ruling on dealing with the eToro platform, which relies on social copy trading, and obtaining $100 for inviting friends, knowing that I do not know how the copier trades, and whether it is Islamic or usurious trading, and that the platform is licensed by Cyprus and Israel?

It is not permissible to deal with global websites managed by non-Muslims that do not observe Islamic legal regulations, except after inquiring and understanding their reality. The questioner is advised to stop dealing with them until clarity is achieved. The Islamic legal regulations for buying and selling shares and trading currencies online have been previously mentioned.