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No problem, the link is posted app. 1 hour before each tournament in the announcement post. Unfortunately in lichess you can´t see them anymore.

Sorry but where can one find the announcement post.

Every week, in my blog:
https://beta.peakd.com/chess/@stayoutoftherz/reminder-round-6-of-the-hive-blitz-chess-tournament-friday-20-gmt
This is an example from yesterdays round, check before next Fr. 20 GMT for the next weeks round.
There are actually 2 tournaments, each Friday this one and on Saturdays the one from @schamangerbert