Yes in EUTR form there’s a page that documents required to prove that I’m renting and registered but I really don’t know what can I do with that

Hi guys, I’m applying for the stamp 4 eu fam visa, however I just found out that My landlord is not registered in rtb 🙃 (my partner and I are renting an apartment) is there any replace documents I can make or will I get the approval without the letter from rtb? I have all the documents needed now I ...