@JacksonCowie Ok. It looks like you open the file, read it - which moves the stream to the end of the file - and then write starting at the end of the file. Use
file_object.seek(0) before the
json.dump To clear the file and then write starting from the beginning of the file.
Dump the entire JSON object back into the file
Forgot to mention in order to join a room with someone else you just need their room id. Also, if you copy the url after creating a room it will include the room id.