Unable to connect online

I know this has been an issue for a while. I've had this issue on and off for a good few months now. But now when I load in I try to connect online but when I do it says that i am unable to as an EA account is not linked. when i go to my settings and press link account it says my account is already linked and to reset. I do so and this cycle repeats. I am unable to access the gallery, events or the marketplace. During one of the events i missed out on gifts because of this exact issue. 

I've tried resting my game and console, but nothing works. My other games work and it's only the Sims 4 i'm having issues with. So it's like a Sim 4 issue and not an xbox network one. 

I am also having issues opening the game, almost every time i have to try and load it around 3 or 4 times or load into another game before being able to open and load into the sims 4, unsure if this issue may be related in a way.

Any help would be appreciated, thanks