Hi everyone

Does anyone know how long can I get my AIP letter after online approved? On 1st December I got online approved, but until today 16th December, I still don't get my AIP letter from immigration, last night my agent rang immigration, they said I am still waiting AIP letter in the queue, does anyone know what's going on with immigration? I have waited for 2 weeks for AIP letter, I am too much worries about it, did someone like me wait so long to get AIP letter?