Re: I ve been banned due to Steam deck
Hello and thanks for reaching out, unfortunately we can't help you with account related issues here on Answers.
I've seen reports about this before and many people thinks that proton is the issue related to this.
Sadly only thing i can request of you is to contact the support again and explain that you play on Steam Deck, explain that there been multiply false bans on Steam Deck and ask them to look into it again.
You can contact the support here:
https://help.ea.com/en/contact-us
Please keep in mind that using a software to gain advantage is cheating.
Exploiting the game in anyway (use a glitch, gain access to areas you not suppose to reach and more) is a way of cheating.
And sometimes using 3rd party softwares could be seen as cheating even if they claim that they are "following the T&C".
With this said, i hope your issue is resolved soon and that you have a nice day!