Hello, My wife filled her I751 in May of 2019 and filed her N400 in June of 2020. Her I751 is still not processed. Her initial 18 month extension expired. She was able to get a I551 stamp on her passport in February 2022 for 6 months. That expired end of August 2022. She called USCIS to get another 6 month stamp on August 2 which is within USCIS guidelines. She was told in 30 days, they will schedule an appointment at the Dallas USCIS office. After 30 days passed, she received an email from Dallas office notifying that they dont have any appointments. We tried multiple times to get an appointment but Dallas office keeps saying they dont have any appointments available. We even tried to get an emergency appointment but still received the same reply. We asked if a different office can stamp her passport and we were told it goes by zip code and there is no way to go to another office. We have out of country travel scheduled for October 21,2022 and November 5, 2022. At the moment, my wife does not have anything that says she is a permanent resident. Has anyone gone though something like this before?