(Update) Line chat room won't open

The clinic's feng shui must be better, my Line is fixed now. (I'm sure it wasn't a network issue, because I tried switching between Wi-Fi and mobile data this morning) It started after the update this morning. Restarting, clearing cache, nothing worked. I haven't tried uninstalling yet because I can't back up my chat history. I'm on Android. Is anyone else experiencing the same problem?