Do I need to change this back to BitBees nostr:npub16eumpaxffppswucpeysysrya9uk39j06d5gr2tsnf6cupq3f4jdqyft6jc or can it stand as BitBees nostr:npub1mm8u4msdr4fypgm7zvgsgwn5jy7n98f579mm9akkwzdzk9mmkeqs7td57x ? Because I am verified as the latter. I am in the weeds over here…I think…
I see you got help with your lightning address, but this screenshot was showing your NIP-05 address.
In your settings you will find fields for both. The “bitcoin lightning tips” one is for your zaps. The “nostr address” is your nip-05 address, used to provide some proof of your identity. You can do this with any website domain, but since setting this up on your own website requires some skills, services like Alby and Primal let you use their domain to verify who you are. This is actually making me realize that we need an easy way for non technical people to setup nip-05 in their own website/domain.
And btw, the point of all this is to make it easier to distinguish your profile from a fake one, without needing to compare npubs, and to prove that you are associated with a certain website.
Link to the less technical part of the NIP: https://github.com/nostr-protocol/nips/blob/master/05.md#identification-not-verification 
Discussion
I noticed now my screenshot was actually showing your lightning address, not your nip05, sorry if it caused confusion!
I tried to verify your NIP 05 and it appears that the pleb.lol domain isn’t online anymore. So I think you need to find a new one.
This is not related to your username. With your current nip 05, BitBees@Pleb.lol, Nostr clients will try to call the pleb.lol website and ask for the pub key of BitBees. Currently they won’t find it 😕
I was searching a bit and found this service by nostr:npub18ams6ewn5aj2n3wt2qawzglx9mr4nzksxhvrdc4gzrecw7n5tvjqctp424 where you can buy a NIP-05 address easily!