Adjustment of Status - I-485

We had a good interview at the USCIS that I felt actually. io asked my wife’s divorce documents which was signed and stamped that shows the officer certificate. We actually submitted the document when we applied but she did not accept it because of missing sign of clark(clark stamps was on it which we have). The question is why they did not ask this before if it is not valid although we submitted with forms. We went to county office today to recieve the document which is signed but it is too late because interview was over and RFE will already be sent in next two weeks which io said. Another question was the Facebook messenger messages since we met and shows our conversation. Because we met on FB and we were just friend for 2 years and after we met in the US we dated just 6 months before marriage. She also wanted to see the facebook page print outs which shows the photos that we shared, this was also weird because we already put all photos print outs with friends, family and our own selfies too. She did not ask anything about our house design how inside, our neigboors or our private without if we want a baby or not because my wife is just 6 years older than me and the clock is counting for her as io said... and another question was the ring! Where did I buy the proposal ring, how much did I pay ? How did i pay ? Do you have the statement of your visa which shows you buy the ring etc. At the end of interview, we got the RFE and left the office. It really made us nervous. Because our marriage is real, all photos exactly shows how we are happy and all photos with her family (parents, sister, aunt etc ) and friends, organizations with friends, campings ... we were waiting more complicated evidences which helps to understand if we have a real marriage, live in the same house, neighborhood, the area which we live, we were also not afraid of getting the questions seperately in different rooms which approves our marriage ! Anyway the basic question if someone have the same situations how is the process after we submit the RFE documents and completed the decision time ? Do we need another interview or the last one is ok for final decision with RFEs ? Btw for your info due to my research on internet , after September 11, 2018 the RFE will not be applied and if the IO says the documents are missing or evidences are not enough, they will deny the application directly instead of processing for RFE. So at least we feel lucky because we are eligible before this date :/