Which Browser Should Be Used With Team Builder?

It has to be done on a laptop/computer. tried doing it on my phone too before knowing this 

Unfortunately buddy this is not true.. i have the newest iPhone and everything is updated and I've used desktop version... no dice... it's safe to say unless your computer is suped up or new or updated team builder is not going to work... the only single way i got it to work was to go to a library which had new computers newest everything so it worked like clock work... it's clear EA only developed team builder thru the scope that they must've thought everyone has a good computer... although i love this mode it needs A LOT of work and i mean A LOT

I’ve tried google chrome, Firefox, & edge browser and none of them work 

Unfortunately I give up. I’ve tried different browsers, different computers and laptops. Even purchased a VPN and nothing. I’ll check back here once something is really done by EA. 

That can’t be right. Flash is no longer in use by anyone. It was discontinued in January 2021.

That said, I’m at a loss as to why team builder doesn’t work on tablets, which are becoming far more popular than laptops in certain circles.

Browser: Safari 

Device: iPad Pro 11 2nd Gen (no laptop or desktop)

Error Messages: No

Problems/Issues: Im able to use the team builder. I got as far as creating a brand and saving my progress. The only thing that doesn’t work is the logo section. Im unable to upload custom logos. I click on the upload and nothing happens. 

tablets just don't have the graphics capabilities on-board that EA needs give you the same experience from PC Op system -> iOS -> the million different versions of android...  too much of this process is cloud based already, tablets having to eat some of that computing power would bog this process down even further, i'm thinkin

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