Hi @ERES ,
The supported version is more like stable version, which users can safely use given with the already released plugins and theme. While the recommendation is just for general advice depending on which plugins or theme are installed (versions), and it may have a different and unknown effect depending on the setup. For example, on my installs, I have 5.5 but the builder works okay.
In every update, there will always be issues and sometimes it’s not because of bugs, but just with the updates breaking the data, customization, and so on. That’s why we highly recommend testing the update to staging, a separate copy of site before jumping right into it on a live site.
A downgrade is only a recommendation since it’s a live site, and that’s to prevent unknown issues popping out caused by updates. It’s not necessarily that 5.5 is not supported, but we can agree that many are affected, other themes and plugins as well, not just ours.
Though with our theme and builder alone, I can say it works in 5.5 so it doesn’t need an update as for this moment. But with 3rd party and bundled plugins, it may be different since they are developed by other authors, hence we don’t have control with the bugs present on their plugins, all we could do is to test and provide the updates that they will forward to us. If you’re unsure of the plugins, we recommend staying with a supported Wordress version.
Thanks!