As long as the certificate is signed and have the MOI seal on it then it's fine.I applied for the PCC using the MOI app and finally got the document. However there is a huge red stamp on it saying "Please refer to the UAE Diplomatic Missions Abroad or Customer Happiness Centers of Ministry of Foreign Affairs and International Cooperation". I am not sure what it means. Is it fine ?
Usually IRCC will verify it during the security screening at the very end