"Ahead of the new year changes, one case has raised particular attention among observers – that of the Leave.EU domain, with speculation mounting as to whether the website would remain online." ... "However, EURACTIV can exclusively reveal that ahead of the end of the Brexit transition date, the organisation migrated its registrant address to a site in Waterford, in the Republic of Ireland, in a move that is likely to provoke accusations of hypocrisy from commentators." ... "The recent development has been long in the offing. EURACTIV reported in early 2019 that the European Commission had plans to revoke all UK-based .eu domains quickly after the end of the Brexit transition period, with the objective of taking all such websites offline within 48 hours after this date."

It was known that it would happen because the EU domain has explicit rules about nationality and geographic location of domain owners (like some country level domains also have).

Basically one has to be an EU citizen or to be located in the EU. British citizens and British companies in the UK are neither.

Ive owned EU domains in the past but i live in Switzerland. Did they miss to form an agreement or was i just lucky?

Just lucky, apparently. The EU says[1]

May I register a “.eu” name if I live in Iceland, Liechtenstein, Norway, or Switzerland?

Not yet, but the EU and the European Economic Area (EEA) have begun discussions with a view to extending the scope of the .eu Top Level Domain to Iceland, Liechtenstein and Norway ... Switzerland cannot be included in these talks as is not a member of the EEA.

[1] https://ec.europa.eu/commission/presscorner/detail/en/MEMO_0...

You shouldn't have been able to register them. You were lucky!

I'm UK with dual nationality so life continues as normal.

This is hilarious!