The brief explanation is that Nitter worked by creating “guest accounts”, which were a leftover from when you used to be able to use the Twitter mobile app without an account. After creation, these accounts lasted for a month. The time since the ability to create these accounts was removed is nearing (has reached?) a month
While you didn’t name names of what app you were using for streaming, I just got into a similar situation with my dorm and what I found worked was using wired ALVR for my streaming. Not wireless, but good, long right-angled USB-C cables don’t cost a fortune. https://github.com/alvr-org/ALVR/wiki/ALVR-wired-setup-(ALVR-over-USB)