Hello there,
Thank you for reaching out.
If you had one of the MTG armor sets applied, the game could crash or fail at/just before character select, effectively kicking you every time you tried to log in (mostly on Steam).
If you’re still getting kicked now:
If you’re using any of the MTG armor ornaments, remove them using the Destiny Companion app or DIM (swap to different armor/ornaments), then try to relaunch.