I am a tenant working on behalf of the landlord but on the advert it say that i am the landlord (not the case) is there any way to update this information?
Only if you placed the advert, otherwise wrote to https://www.openrent.co.uk/faq#i-have-more-questions to explain your role and who the landlord is.
Quote the advert reference number or URL for the property or both.
Hello,
Email https://www.openrent.co.uk/faq#i-have-more-questions and they should be able to help you with this.
cheers