Which Browser Should Be Used With Team Builder?

Does not work from my MacBook nor my iPhone. Used multiple browsers. And i still don’t have a fix yet. 

this actually helped me a lot, i was signed in and playing a game on one of my dynasty's and once i closed the game it let me start my team builder!

I’ve tried Safari, Google, Google Chrome and Firefox. None of them work I keep getting an unsupported device or browser message. 

switching to DDG isn't a fix... if it was, it screams of browser issues on the user end... DDG crapped out for me every time i tried to use it even before the login page, at least, last night it was...

I got on this morning... was able to SAVE some of my work, so THAT's cool... SUBMITTING it is a different story... images that were approved before are getting flagged now with 112 errors, even the logo i created from scratch for my DJ business...   When i was signed in on my windows work computer, i still couldn't upload pics.  the Site RAN better, and could save, like i said, but that's all on this attempt... At least i can sorta create the next team on this path to my  own custom conference

(dell, i5 4th gen, 8gb Ram, integrated video, running a very light version of Linux with Firefox)

Nah. The ipad pro models can handle that. Im a graphic designer and use my ipad pro for my job and it can handle the programs i use. Besides im able to use the team builder. I just can’t download my custom images. 

• Which browser(s) have you tried using? Chrome, Edge, DDG, Chrome Incognito mode
• Are you getting a specific error message? Error: [400]: An unexpected error occured during this operation.
• Where are you running into problems? Saving a team and submitting a team. 
  • Are you not able to enter the Team Builder at all? I can get TB open but not save any changes I might make. 
  • Do you run into a problem when you're trying to edit/save something? Saving changes won't save.

I can’t access it at all on any browser. This is beyond frustrating. I’m done playing this game. 

Everything pops up for me besides the actual image to see my edits then when I try to save it just loads forever without saving