I know there are a few topics around federation, but I can’t seem to flush out the solution.
I am using write.as pro and during the trial period, I activated federation and easily found @email@example.com on Mastodon.
Once I chose to subscribe, I connected my custom domain whereby Federation changed (displayed within customization) to @firstname.lastname@example.org
However, when entering @email@example.com into Mastodon, nothing is found.
What am I missing?