So it seems one has to actually login on pc to actually turn on the setting. Which kinda isn't told, simply fusing the account to a PC account isn't enough. You have to actually login to PC in order to turn on cross-trade. Yes I have read the thing many times, but not everyone has access to a pc that can run the game. Which means that there are some still locked to a console.
Doing the process of linking accounts isn't good enough as the system will still only read you as a switch (or other console player) player as long as that is the only way you login. It only reads you as cross-save when you login to PC. I was thinking that it would take until server reset, but I still can't trade with much of my clan due to that aspect. They don't have a pc thats capable of running Warframe (especially when we're talking about Discord pushing it to near death by itself).