Just reload the settings page after saving and you'll see the activation link. Just now enabled 2FA for my account.

That makes sense. I totally understand lemmy is still in evolution phase. Let it grow and mature.

It was on All via Everything. So it shows same posts of different instances as different rows? Now I feel stupid. Sorry for wasting all your time really. Edit: But still I'm wondering why post same content on multiple instances.

Word of mouth marketing is the best strategy right now. Look how lemmy user base spiked in recent days. More people will look for alternatives after 3rd party apps stops working on July 1st. In the meantime, spread the word on reddit.