→ ring a bell
If I would have to guess, they apply the 24 hour penalty on all the daily events, including Join Avenue. Which means after 24 hours from the time change (so 2am to 2am the next day for example) you should be able to participate in Daily Events again as well as things in Join Avenue. Don't change DSs or change the time or else the 24 hours will start again.
This happened to me (I switched DS which had different times) and after more than 24 hours I could do the things at Join Avenue again.