The same here - Android phone, Minecraft Bedrock 1.16.201 hotfix version. Reinstallation does not help. Everything works for me only the first run after the installation when a user must log-in first time. After this, everytime I run Minecraft it can't connect to Marketplace and user account is not loaded too.
It only shows last played character (I think it is cached, because it is old version now). Character modification does not work, it shows only non-marketplace items/parts. No Marketplace button animation, no user owned content, etc.
On Windows 10, everything work as expected. Literally, marketplace works, my owned content is here, game shows all my characters and they can be edited, char. editor shows all items, etc.
Bug exists longer than 6 months without change in multiple versions.. This is alarming!
Sorry, this is for bedrock version - google navigates me to wrong project.
-This bug makes game hardly playable or even unplayable on normal and especially high difficulty because player character can not walk through door etc. This is essential especially on touch enabled devices like smartphones, tablets, Surface like devices etc. Player is simply forced to multiple tries (more than few seconds of delay in desired action like walk thru door) or disable autojump > leave self without ability to look around while jumping and with need to tap "jump" button themselves.
I catch myself when I want to erase Minecraft because of this. I own Surface and multiple Android devices and to play this game is very annoying and frustrating! Without auto jump I am forced to use different controller than touchscreen (gamepad etc.).
This issue is already created here: MCPE-113383