It could be that you need to put more energy into the working, and/or, the target could have protections or be resistant.
Protections can exist in many ways, if they meditate, they will be naturally healing and rebalancing the energy you sent, they could have support from ancestors or guardian entities, or just natural shielding.
Leaving a country take a lot of energy, money and organization, the person has to have somewhere to go, get tickets, figure out all the logistics etc. He could be feeling motivated to go and not be able to, until the magick can align things to fix all that.
Use meditation to raise your energy to put more oomph into workings, or consider doing the ritual multiple days in a row to build it up.