Internally core CB is Joomla 4 ready in a separate branch that we'll be merging and releasing this month. CBSubs has also had some Joomla 4 testing. Other plugins have not been Joomla 4 tested, but vast majority do not use Joomla 4 API at all and likely are fine. We'll be doing a deeper testing and fixing when Joomla 4 RC releases.
Kyle (Krileon)
Community Builder Team Member
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If you are a Professional, Developer, or CB Paid Subscriptions subscriber and have a support issue please always post in your respective support forums for best results!
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If I've missed your support post with a delay of 3 days or greater and are a Professional, Developer, or CBSubs subscriber please
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Please note I am available Monday - Friday from 8:00 AM CST to 4:00 PM CST. I am away on weekends (Saturday and Sunday) and if I've missed your post on or before a weekend after business hours please wait for the next following business day (Monday) and will get to your issue as soon as possible, thank you.
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My role here is to provide guidance and assistance. I cannot provide custom code for each custom requirement. Please do not inquire me about custom development.