coop online

Hi i want to ask a guidance, i installed smapi and when im about to go co-op with friend it wont let me enter, it says no cabin. but when i use the base game (without smapi) it work just fine. I also got this msg, and i dont know what happen... can someone please help me??? thank you

Hello was first time trying to play the coop online option it not showing the tab thingy to put in my code. I’ve done everything I could to switch and I rebooted my modem and other stuff. Still not showing the option to put in code for online communication. It’s blank. Or am I doing something...