We’ve pushed the release candidate of Kopano WebApp 5.2.0 to the download server and it’s repositories.
For all the details check the changelog.
If you try this RC and find any issues, please let us know.
Later this week we’ll release this version as final if no major problems are reported.
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I’m sorry to hear that this still does not work. You can also reach out to our sales team at email@example.com to request a trial key.