@lifeofguenter For a threads.net account to be followable from the Fediverse, several conditions have to be met at this time:
1.) The account must be located in the USA, Canada or Japan. Perhaps more countries will be added soon, but for the time being not from the EU thanks to the #GDPR.
2.) The #Threads account holder must have agreed to be visible in the Fediverse.
See also the official announcement at engineering.fb.com/2024/03/21/networking-traffic/threads-has-entered-the-fediverse/