1. ATP flight school can not help in any way with the EASA conversion, I assume you already know this.
ATP has a FAA and EASA program.
https://atpflightschool.com/internat...ilot-easa.html
Not sure if flywithtej is referring to this program or the other airline track. However theirs no mention of the ATP exams to get a frozen ATPL which I understand is required for flying in Europe?