Not everything will go smoothly and perfectly. There will always be challenges in everything that we do and try same with life and ofc same with the metaverse.
Metaverse is still in the early stages and will need to through a lot of changes, upgrade, and more ...
Some challenges include identity authentication and privacy control. In the real world, it's often not difficult to identify someone. But as people traverse the digital world in their avatars, it will be difficult to tell or prove who the other person is. You can compare this with how facebook works there are a lot of people faking their identities. Using a different name, photo, gender and all. This is why you can't just trust anyone you meet in the internet.