The deadlines and procedures are set out in the evaluation result letter. For more information on complaints about proposal rejection: https://webgate.ec.europa.eu/funding-tenders-opportunities/display/OM/Complaints+about+proposal+rejection.
The eligibility rule refers to the actual place of residence of the researcher, or, the location where the researcher has undertaken their main activity. ...
Examples: Create a company, pursue another research project (e.g. ERC grant), engage in advanced studies (not related to the action), start working for the ...