The game has only been out since Jan. 26th, 2018 and the Lobby has a list of issues! Friend aren't able to play with other friends, matches lag out, and text block errors that crash your game! Kotaku has been monitoring and added a informative post about the bugs and issues that players are experiencing. You can check that out here: https://kotaku.com/dragon-ball-fighterz-lobby-system-is-a-huge-hassle-1822516386
Also we got an official response from Bandai Namco US on twitter:
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